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Document And Entity Information - shares	3 Months Ended
Document And Entity Information - shares	Aug. 26, 2012	Sep. 21, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	LANDEC CORP \CA\
Document Type	10-Q
Current Fiscal Year End Date	--05-26
Entity Common Stock, Shares Outstanding		25,714,484
Amendment Flag	true
Amendment Description	We are filing this Amendment to (i) restate our previously reported financial statements for this period to change the previously reported amount of our investment in Windset Holdings 2010, Ltd. (“Windset”) and to make a corresponding increase in other income to reflect the higher fair market value of our investment ( see also “Item 1. Financial Statements – Note 2. Restatement of Previously Reported Consolidated Financial Statements” for discussion of significant changes), and (ii) to amend “Item 4. Controls and Procedures” to disclose certain matters identified in connection with the Company’s evaluation, under the supervision and with the participation of the Company’s management, of the effectiveness of its disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended.
Entity Central Index Key	0001005286
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Aug. 26, 2012
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1

Consolidated Balance Sheets (Unaudited) - USD ($)	Aug. 26, 2012	May 27, 2012
Current Assets:
Cash and cash equivalents	$ 10,049,000	$ 22,177,000
Marketable securities	756,000
Accounts receivable, less allowance for doubtful accounts of $524 and $512 at August 26, 2012 and May 27, 2012, respectively	30,295,000	31,951,000
Accounts receivable, related party	268,000	323,000
Income taxes receivable	316,000	47,000
Inventories, net	23,543,000	22,011,000
Deferred taxes	2,076,000	2,076,000
Prepaid expenses and other current assets	2,838,000	2,578,000
Total Current Assets	70,141,000	81,163,000
Investment in non-public company, non-fair value	793,000	793,000
Investment in non-public company, fair value	25,796,000	21,500,000
Property and equipment, net	63,776,000	63,495,000
Goodwill, net	49,620,000	49,620,000
Trademarks/tradenames, net	48,428,000	48,428,000
Customer relationships, net	10,269,000	10,557,000
Other assets	2,037,000	2,136,000
Total Assets	270,860,000	277,692,000
Current Liabilities:
Accounts payable	26,724,000	22,644,000
Related party accounts payable	533,000	776,000
Accrued compensation	3,958,000	5,782,000
Other accrued liabilities	7,566,000	18,642,000
Deferred revenue	276,000	162,000
Lines of credit	7,500,000	11,666,000
Current portion of long-term debt	7,012,000	7,012,000
Total Current Liabilities	53,569,000	66,684,000
Long-term debt, less current portion	38,936,000	40,305,000
Deferred taxes	19,979,000	18,037,000
Other non-current liabilities	1,349,000	1,108,000
Total Liabilities	113,833,000	126,134,000
Stockholders’ Equity:
Common stock, $0.001 par value; 50,000,000 shares authorized; 25,709,984 and 25,644,580 shares issued and outstanding at August 26, 2012 and May 27, 2012, respectively	26,000	26,000
Additional paid-in capital	120,900,000	119,894,000
Retained earnings	34,188,000	29,822,000
Total Stockholders’ Equity	155,114,000	149,742,000
Non controlling interest	1,913,000	1,816,000
Total Equity	157,027,000	151,558,000
Total Liabilities and Stockholders’ Equity	$ 270,860,000	$ 277,692,000

Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Aug. 26, 2012	May 27, 2012
Allowance for doubtful accounts (in Dollars)	$ 524	$ 512
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	25,709,984	25,644,580
Common stock, shares outstanding	25,709,984	25,644,580

Consolidated Statements of Income (Unaudited) - USD ($)	3 Months Ended
Consolidated Statements of Income (Unaudited) - USD ($)	Aug. 26, 2012	Aug. 28, 2011
Revenues:
Product sales	$ 101,303,000	$ 72,321,000
Services revenue, related party	771,000	980,000
Total revenues	102,074,000	73,301,000
Cost of revenue:
Cost of product sales	87,664,000	61,269,000
Cost of services revenue	647,000	782,000
Total cost of revenue	88,311,000	62,051,000
Gross profit	13,763,000	11,250,000
Operating costs and expenses:
Research and development	2,204,000	2,333,000
Selling, general and administrative	8,556,000	6,044,000
Total operating costs and expenses	10,760,000	8,377,000
Operating income	3,003,000	2,873,000
Dividend income	281,000	281,000
Interest income	26,000	76,000
Interest expense	(541,000)	(176,000)
Other income	4,259,000	9,000
Net income before taxes	7,028,000	3,063,000
Income tax expense	(2,565,000)	(1,110,000)
Consolidated net income	4,463,000	1,953,000
Non controlling interest	(97,000)	(141,000)
Net income applicable to Common Stockholders	$ 4,366,000	$ 1,812,000
Basic net income per share (in Dollars per share)	$ 0.17	$ 0.07
Diluted net income per share (in Dollars per share)	$ 0.17	$ 0.07
Shares used in per share computation
Basic (in Shares)	25,670	26,409
Diluted (in Shares)	26,212	26,687
Other comprehensive income, net of tax
Interest rate swap		$ (54,000)
Income tax benefit		20,000
Other comprehensive income, net of tax		(34,000)
Comprehensive income attributable to Common Shareholders	$ 4,366,000	$ 1,778,000

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Aug. 26, 2012	Aug. 28, 2011
Cash flows from operating activities:
Consolidated net income	$ 4,463,000	$ 1,953,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,856,000	1,355,000
Stock-based compensation expense	348,000	441,000
Tax benefit from stock-based compensation expense	(505,000)	(1,280,000)
Increase in long-term receivable		(200,000)
Loss on disposal of property and equipment	180,000
Deferred taxes	1,942,000	(299,000)
Change in investment in non-public company (fair market value)	(4,296,000)	(52,000)
Changes in current assets and current liabilities:
Accounts receivable, net	1,656,000	1,293,000
Accounts receivable, related party	55,000	40,000
Income taxes receivable	236,000	1,329,000
Inventories, net	(1,532,000)	533,000
Issuance of notes and advances receivable		(752,000)
Collection of notes and advances receivable		5,000
Prepaid expenses and other current assets	(260,000)	195,000
Accounts payable	4,080,000	1,413,000
Related party accounts payable	(243,000)	71,000
Accrued compensation	(1,824,000)	(456,000)
Other accrued liabilities	(1,435,000)	276,000
Deferred revenue	364,000	(1,507,000)
Net cash provided by operating activities	5,085,000	4,358,000
Cash flows from investing activities:
Purchases of property and equipment	(2,029,000)	(1,561,000)
Purchase of marketable securities	(756,000)	(18,163,000)
Proceeds from maturities of marketable securities		14,175,000
Net cash used in investing activities	(2,785,000)	(5,549,000)
Cash flows from financing activities:
Proceeds from sale of common stock	202,000
Taxes paid by Company for stock swaps and RSUs	(49,000)	(25,000)
Tax benefit from stock-based compensation expense	505,000	1,280,000
Earn out payment from Lifecore acquisition	(9,650,000)
Payments on long-term debt	(1,369,000)	(1,000,000)
Payments on lines of credit	(4,166,000)
Decrease in other assets	99,000	43,000
Net cash (used in) provided by financing activities	(14,428,000)	298,000
Net decrease in cash and cash equivalents	(12,128,000)	(893,000)
Cash and cash equivalents at beginning of period	22,177,000	8,135,000
Cash and cash equivalents at end of period	$ 10,049,000	7,242,000
Supplemental schedule of noncash operating activities:
Long-term receivable from Monsanto		200,000
Unrealized (gain) loss from interest rate swap		$ 34,000

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies

3 Months Ended

Aug. 26, 2012

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

1. Organization, Basis of Presentation and Summary of Significant Accounting Policies

Organization

Landec Corporation and its subsidiaries (“Landec” or the “Company”) design, develop, manufacture and sell polymer products for food and agricultural products, medical devices and licensed partner applications that incorporate Landec’s patented polymer technologies. The Company has two proprietary polymer technology platforms: 1) Intelimer® polymers, and 2) hyaluronan (“HA”) biopolymers. The Company’s HA biopolymers are proprietary in that they are specially formulated for specific customers to meet strict regulatory requirements. The Company’s polymer technologies, along with its customer relationships and trade names, are the foundation, and a key differentiating advantage, upon which Landec has built its business. The Company sells specialty packaged fresh-cut vegetables and whole produce to retailers and club stores, primarily in the United States, Asia and Canada, through its Apio, Inc. (“Apio”) subsidiary and HA-based biomaterials through its Lifecore Biomedical, Inc. (“Lifecore”) subsidiary.

Basis of Presentation

The accompanying unaudited consolidated financial statements of Landec have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions for Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, all adjustments (consisting of normal recurring accruals) have been made which are necessary to present fairly the financial position at August 26, 2012 and the results of operations and cash flows for all periods presented. Although Landec believes that the disclosures in these financial statements are adequate to make the information presented not misleading, certain information normally included in financial statements and related footnotes prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted in accordance with the rules and regulations of the Securities and Exchange Commission. The accompanying financial data should be reviewed in conjunction with the audited financial statements and accompanying notes included in Landec's Annual Report on Form 10-K for the fiscal year ended May 27, 2012.

The results of operations for the three months ended August 26, 2012 are not necessarily indicative of the results that may be expected for an entire fiscal year because there is some seasonality in Apio’s food business, particularly, Apio’s Food Export business and the order patterns of Lifecore’s customers which may lead to significant fluctuations in Landec’s quarterly results of operations.

Basis of Consolidation

The consolidated financial statements are presented on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles and include the accounts of Landec and its subsidiaries, Apio, Lifecore and Landec Ag. All material inter-company transactions and balances have been eliminated.

Arrangements that are not controlled through voting or similar rights are reviewed under the guidance for variable interest entities (“VIEs”). A company is required to consolidate the assets, liabilities and operations of a VIE if it is determined to be the primary beneficiary of the VIE.

An entity is a VIE and subject to consolidation, if by design: a) the total equity investment at risk is not sufficient to permit the entity to finance its activities without additional subordinated financial support provided by any parties, including equity holders or b) as a group the holders of the equity investment at risk lack any one of the following three characteristics: (i) the power, through voting rights or similar rights to direct the activities of an entity that most significantly impact the entity’s economic performance, (ii) the obligation to absorb the expected losses of the entity, or (iii) the right to receive the expected residual returns of the entity. The Company reviewed the consolidation guidance and concluded that the non-public companies in which the Company holds equity investments are not VIEs.

Use of Estimates

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make certain estimates and judgments that affect the amounts reported in the financial statements and accompanying notes. The accounting estimates that require management’s most significant and subjective judgments include revenue recognition; sales returns and allowances; recognition and measurement of current and deferred income tax assets and liabilities; the assessment of recoverability of long-lived assets; the valuation of intangible assets and inventory; the valuation of investments; and the valuation and recognition of stock-based compensation.

These estimates involve the consideration of complex factors and require management to make judgments. The analysis of historical and future trends can require extended periods of time to resolve and is subject to change from period to period. The actual results may differ from management’s estimates.

Cash, Cash Equivalents and Marketable Securities

Cash and Cash Equivalents

The Company records all highly liquid securities with three months or less from date of purchase to maturity as cash equivalents. Cash equivalents consist mainly of certificate of deposits (CDs), money market funds and U.S. Treasuries. The market value of cash equivalents approximates their historical cost given their short-term nature.

Marketable Securities

Short-term marketable securities consist of CDs that are FDIC insured and single A or better rated municipal bonds with original maturities of more than three months at the date of purchase regardless of the maturity date as the Company views the funds within its portfolio as available for use in its current operations. The Company classifies all debt securities with readily determined market values as “available for sale”. The contractual maturities of the Company's marketable securities that are due in less than one year represent $756,000 and $0 of its marketable securities as of August 26, 2012 and May 27, 2012, respectively. The Company did not have any marketable securities with maturities greater than one year at August 26, 2012 or May 27, 2012. Investments in marketable securities are carried at fair market value. Unrealized gains and losses are reported as a component of stockholders’ equity. The cost of debt securities is adjusted for amortization of premiums and discounts to maturity. This amortization is recorded to interest income. Realized gains and losses on the sale of available-for-sale securities are also recorded to interest income and were not significant for the three months ended August 26, 2012 and August 28, 2011. During the three months ended August 26, 2012 and August 28, 2011, the Company did not sell any marketable securities. The cost of securities sold is based on the specific identification method.

Financial Instruments

The Company’s financial instruments are primarily composed of marketable securities, commercial-term trade payables, grower advances, and notes receivable, as well as long-term notes receivable and debt instruments. For short-term instruments, the historical carrying amount approximates the fair value of the instrument. The fair value of long-term debt and lines of credit approximates their carrying value. Fair values for long-term financial instruments not readily marketable are estimated based upon discounted future cash flows at prevailing market interest rates. Based on these assumptions, management believes the fair market values of the Company’s financial instruments are not materially different from their recorded amounts as of August 26, 2012 or May 27, 2012.

Investments in Non-Public Companies

The Company’s investment in Aesthetic Science Corporation is carried at cost and adjusted for impairment losses. Since there is no readily available market value information, the Company periodically reviews this investment to determine if any other than temporary declines in value have occurred based on the financial stability and viability of Aesthetic Science.

Aesthetic Science sold the rights to its Smartfil™ Injector System on July 16, 2010. As a result, Landec evaluated its cost method investment for impairment, utilizing a discounted cash flow analysis. Based on the terms of the agreement, the Company determined that its investment was other than temporarily impaired and therefore, recorded an impairment loss of $1.0 million as of May 30, 2010. The Company’s carrying value of its investment in Aesthetic Sciences, net of the impairment loss, is $793,000 at August 26, 2012 and May 27, 2012.

On February 15, 2011, the Company made an investment in Windset Holdings 2010 Ltd., a Canadian corporation (“Windset”), which is reported as an investment in non-public company, fair value, in the accompanying Consolidated Balance Sheets as of August 26, 2012 and May 27, 2012. The Company has elected to account for its investment in Windset under the fair value option (see Note 5).

Intangible Assets

The Company’s intangible assets are comprised of customer relationships with a finite estimated useful life of twelve to thirteen years and trade names and goodwill with indefinite lives.

Finite-lived intangible assets are reviewed for possible impairment whenever events or changes in circumstances occur that indicate that the carrying amount of an asset (or asset group) may not be recoverable. Indefinite lived intangible assets are reviewed for impairment at least annually by comparing the fair value of the asset to its carrying value to determine if there has been an impairment. Goodwill is reviewed for impairment at least annually by comparing the fair value of the related reporting unit to its carrying value to determine if there has been an impairment.

Fair Value Measurements

The Company uses fair value measurement accounting for financial assets and liabilities and for financial instruments and certain other items at fair value. The Company has elected the fair value option for its investment in a non-public company (see Note 5). The Company has not elected the fair value option for any of its other eligible financial assets or liabilities.

The accounting guidance established a three-tier hierarchy for fair value measurements, which prioritizes the inputs used in measuring fair value as follows:

Level 1 – observable inputs such as quoted prices for identical instruments in active markets.

Level 2 – inputs other than quoted prices in active markets that are observable either directly or indirectly throuhg corroboration with observable market data.

Level 3 – unobservable inputs in which there is little or no market data, which would require the Company to develop its own assumptions.

As of August 26, 2012, the Company held certain assets and liabilities that are required to be measured at fair value on a recurring basis, including cash equivalents, marketable securities, interest rate swap and liability for contingent consideration in connection with the acquisition of GreenLine and its minority interest investment in Windset.

The fair value of the Company’s cash equivalents and marketable securities is determined based on observable inputs that are readily available in public markets or can be derived from information available in publicly quoted markets. Therefore, the Company has categorized its cash equivalents and marketable securities as Level 1.

The fair value of the Company’s interest rate swap is determined based on model inputs that can be observed in a liquid market, including yield curves, and is categorized as Level 2 inputs.

The fair value of the Company’s liability for contingent consideration is based on significant inputs not observed in the market and thus represents a Level 3 measurement. The Company determined the fair value of the liability for the contingent consideration based on a probability-weighted discounted cash flow analysis, as further discussed in Note 3 to the Consolidated Financial Statements.

The Company has elected the fair value option of accounting for its 20.1% minority interest in Windset. The fair value of the Company’s investment in Windset utilizes significant unobservable inputs in the discounted cash flow models, including projected cash flows, growth rates and discount rates. As a result, the Company’s investment in Windset is considered to be a Level 3 measurement investment, as further discussed in Note 5. The change in the fair market value of the Company’s investment in Windset for the three months ended August 26, 2012 was due to the change in the fair market value of Windset during that period. In determining the fair value of the investment in Windset, the Company utilizes the following significant unobservable inputs in the discounted cash flow models:

	At August 26, 2012			At May 27, 2012
Revenue growth rates	3%	to	10%	3%	to	24%
Expense growth rates	3%	to	8%	3%	to	18%
Income tax rates	8%	to	25%		25%
Discount rates	16%	to	27%	16%	to	27%

The revenue growth, expense growth and income tax rate assumptions, consider the Company's best estimate of the trends in those items over the discount period. The discount rate assumption takes into account the risk-free rate of return, the market equity risk premium and the Company’s specific risk premium and then applies an additional discount for lack of marketability of the underlying securities. The discounted cash flow valuation model used by the Company has the following sensitivity to changes in inputs and assumptions (in thousands):

	Impact on value of Windset investment as of August 26, 2012
10% increase in revenue growth rates	$1,000
10% increase in expense growth rates	($600)
10% increase in income tax rates	($100)
10% increase in discount rates	($250)

Imprecision in estimating unobservable market inputs can affect the amount of gain or loss recorded for a particular position. The use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.

The following table summarizes the fair value of the Company’s assets and liabilities that are measured at fair value on a recurring basis as of August 26, 2012 and May 27, 2012 (in thousands):

	Fair Value at August 26, 2012 (Restated)						Fair Value at May 27, 2012
Assets:	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Marketable securities	$	756	$	-	$	-	$	-	$	-	$	-
Investment in private company		-		-		25,796		-		-		21,500
Total	$	756	$	-	$	25,796	$	-	$	-	$	21,500

Liabilities:
Contingent consideration	$	-	$	-	$	3,956	$	-	$	-	$	3,926
Interest rate swap		-		305		-		-		347		-
Total	$	-	$	305	$	3,956	$	-	$	347	$	3,926

Revenue Recognition

We recognize revenue when the earnings process is complete, as evidenced by an agreement with the customer, transfer of title, and acceptance, if applicable, as well as fixed pricing and probable collectibility. We record pricing allowances, including discounts based on arrangements with customers, which we recognize in revenue as a reduction to both accounts receivable and net revenue.

When a sales arrangement contains multiple elements, the Company allocates revenue to each element based on a selling price hierarchy. The relative selling price for a deliverable is based on its vendor-specific objective evidence (VSOE), if available, third-party evidence (TPE), if VSOE is not available, or estimated selling price if neither VSOE nor TPE is available. The Company then recognizes revenue on each deliverable in accordance with its policies for product and service revenue recognition. The Company is not typically able to determine VSOE or TPE, and therefore, uses estimated selling prices to allocate revenue between the elements of the arrangement.

The Company limits the amount of revenue recognition for delivered elements to the amount that is not contingent on the future delivery of products or services or future performance obligations or subject to customer-specific cancellation rights. The Company evaluates each deliverable in an arrangement to determine whether they represent separate units of accounting. A deliverable constitutes a separate unit of accounting when it has stand-alone value, and for an arrangement that includes a general right of return relative to the delivered products or services, delivery or performance of the undelivered product or service is considered probable and is substantially controlled by the Company. The Company considers a deliverable to have stand-alone value if the product or service is sold separately by the Company or another vendor or could be resold by the customer. Further, the revenue arrangements generally do not include a general right of return relative to the delivered products. Where the aforementioned criteria for a separate unit of accounting are not met, the deliverable is combined with the undelivered element(s) and treated as a single unit of accounting for the purposes of allocation of the arrangement consideration and revenue recognition. The Company allocates the total arrangement consideration to each separable element of an arrangement based upon the relative selling price of each element. Allocation of the consideration is determined at arrangement inception on the basis of each unit’s relative selling price. In instances where the Company has not established fair value for any undelivered element, revenue for all elements is deferred until delivery of the final element is completed and all recognition criteria are met.

Reclassifications

Certain reclassifications have been made to prior period financial statements to conform to the current period presentation.

New Accounting Pronouncements

Intangibles-Goodwill and Other

In September 2011, the FASB issued new guidance that will allow an entity to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. Under this amendment, an entity would not be required to calculate the fair value of a reporting unit unless the entity determines, based on a qualitative assessment, that it is more likely than not that its fair value is less than its carrying amount. The amendment includes a number of events and circumstances for an entity to consider in conducting the qualitative assessment. The guidance is effective for fiscal years beginning after December 15, 2011 with early adoption permitted. The adoption of this update did not have a material impact on the Company’s consolidated financial statements.

Presentation of Comprehensive Income

In December 2011, the FASB issued new guidance that improves the comparability, consistency, and transparency of financial reporting and increases the prominence of items reported in other comprehensive income by eliminating the option to present components of other comprehensive income as part of the statement of changes in stockholders' equity. The amendments in this standard require that all non-owner changes in stockholders' equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. Under either method, adjustments must be displayed for items that are reclassified from other comprehensive income ("OCI") to net income, in both net income and OCI. The standard does not change the current option for presenting components of OCI gross or net of the effect of income taxes, provided that such tax effects are presented in the statement in which OCI is presented or disclosed in the notes to the financial statements. Additionally, the standard does not affect the calculation or reporting of earnings per share. For public entities, the amendments in this ASU are effective for fiscal years, and interim periods within those years, beginning after December 15, 2011 and are to be applied retrospectively, with early adoption permitted. The Company adopted this standard for the quarter ended August 26, 2012.

Fair Value Measurement

In May 2011, the FASB issued new guidance effective for annual reporting periods beginning after December 15, 2011. This guidance amends certain accounting and disclosure requirements related to fair value measurements. Additional disclosure requirements in the update include: (1) for Level 3 fair value measurements, quantitative information about unobservable inputs used, a description of the valuation processes used by the entity, and a qualitative discussion about the sensitivity of the measurements to changes in the unobservable inputs; (2) for an entity’s use of a nonfinancial asset that is different from the asset’s highest and best use, the reason for the difference; (3) for financial instruments not measured at fair value but for which disclosure of fair value is required, the fair value hierarchy level in which the fair value measurements were determined; and (4) the disclosure of all transfers between Level 1 and Level 2 of the fair value hierarchy. The Company adopted this standard for the quarter ended August 26, 2012.

Disclosures about Offsetting Assets and Liabilities

In November 2011, the FASB issued new guidance effective for annual reporting periods beginning January 1, 2013. This guidance amends the disclosure requirements around offsetting to enable users of the financial statements to understand the effect of those arrangements on its financial position. Entities are required to disclose both gross and net information about the instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting arrangement. The Company does not expect the adoption of this standard to have a material impact on its consolidated financial statements.

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Detail)	3 Months Ended
	Aug. 26, 2012 USD ($)	May 27, 2012 USD ($)
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	12 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	13 years
Number of Proprietary Platforms	2
Marketable Securities Contractual Maturity	1 year
Marketable Securities (in Dollars)	$ 756,000	$ 0
Other than Temporary Impairment Losses, Investments (in Dollars)	1,000,000
Cost Method Investments (in Dollars)	$ 793,000	$ 793,000
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	20.10%

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Detail) - Summary of discounted cash flow valuation model used by the Company's for the investment in Windset: $ in Thousands	3 Months Ended
	Aug. 26, 2012 USD ($)
10% increase in revenue growth rates	$ 1,000
10% increase in expense growth rates	(600)
10% increase in income tax rates	(100)
10% increase in discount rates	$ (250)

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Detail) - Summary of fair value of assets and liabilities measure on recurring basis: - USD ($) $ in Thousands	Aug. 26, 2012	May 27, 2012	Apr. 23, 2012
Fair Value at August 26, 2012 [Member] \| Fair Value, Inputs, Level 1 [Member]
Marketable securities	$ 756
Total	756
Fair Value at August 26, 2012 [Member] \| Fair Value, Inputs, Level 2 [Member]
Liabilities:
Interest rate swap	305
Total	305
Fair Value at August 26, 2012 [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment in private company	25,796
Total	25,796
Liabilities:
Contingent consideration	3,956
Total	3,956
Fair Value at May 27, 2012 [Member] \| Fair Value, Inputs, Level 2 [Member]
Liabilities:
Interest rate swap		$ 347
Total		347
Fair Value at May 27, 2012 [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment in private company		21,500
Total		21,500
Liabilities:
Contingent consideration		3,926
Total		3,926
Investment in private company	$ 25,796	$ 21,500
Contingent consideration			$ (3,926)

Note 2 - Restatement of Previously Reported Consolidated Financial Statements (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 26, 2012	Aug. 28, 2011
After Tax Effect [Member] \| Windsest [Member]
Investments, Fair Value Disclosure	$ 1,800
Windsest [Member]
Investments, Fair Value Disclosure	2,900
Increase (Decrease) in Deferred Income Taxes	1,100
Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) Included in Investment Income	2,900
Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) Included in Investment Income	$ 4,296	$ 52

Note 2 - Restatement of Previously Reported Consolidated Financial Statements (Detail) - Consolidated Balance Sheet - USD ($) $ in Thousands	Aug. 26, 2012	May 27, 2012
Previously Reported [Member]
Investment in non-public company, fair value	$ 22,896
Total Assets	267,960
Deferred taxes – noncurrent	18,906
Retained earnings	32,361
Total Stockholders’ Equity	153,287
Total Equity	155,200
Total Liabilities and Stockholders’ Equity	267,960
Adjustment [Member]
Investment in non-public company, fair value	2,900
Total Assets	2,900
Deferred taxes – noncurrent	1,073
Retained earnings	1,827
Total Stockholders’ Equity	1,827
Total Equity	1,827
Total Liabilities and Stockholders’ Equity	2,900
Restatement [Member]
Investment in non-public company, fair value	25,796
Total Assets	270,860
Deferred taxes – noncurrent	19,979
Retained earnings	34,188
Total Stockholders’ Equity	155,114
Total Equity	157,027
Total Liabilities and Stockholders’ Equity	270,860
Investment in non-public company, fair value	25,796	$ 21,500
Total Assets	270,860	277,692
Deferred taxes – noncurrent	19,979	18,037
Retained earnings	34,188	29,822
Total Stockholders’ Equity	155,114	149,742
Total Equity	157,027	151,558
Total Liabilities and Stockholders’ Equity	$ 270,860	$ 277,692

Note 3 - Acquisitions (Detail) $ in Thousands	1 Months Ended		3 Months Ended
Note 3 - Acquisitions (Detail) $ in Thousands	Apr. 23, 2012 USD ($)	May 29, 2011 USD ($)	Aug. 26, 2012 USD ($)	Aug. 28, 2011 USD ($)	Feb. 24, 2013 USD ($)	Apr. 30, 2012 USD ($)
Achieving Revenue Target [Member] \| GreenLine [Member]
Business Acquisition, Contingent Consideration, Potential Cash Payment						$ 4,000
Exceeding Revenue Target [Member] \| GreenLine [Member]
Business Acquisition, Contingent Consideration, Potential Cash Payment						3,000
Revenue Target [Member] \| GreenLine [Member]
Revenues	$ 3,000
GreenLine [Member] \| Customer Base [Member]
Finite-lived Intangible Assets Acquired	$ 7,500
Finite-Lived Intangible Asset, Useful Life	13 years
GreenLine [Member]
Number of Processing Plants	4
Business Acquisition, Cost of Acquired Entity, Cash Paid						62,900
Business Acquisition, Escrow Deposit						4,700
Business Acquisition, Contingent Consideration, Potential Cash Payment	$ 7,000				$ 4,000	7,000
Business Acquisition, Contingent Consideration, at Fair Value	3,900
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 66,800
Effective Income Tax Rate, Continuing Operations	40.00%
Number of Intangible Assets Identified	2 years
Indefinite Lived Intangible Assets Market Value	$ 36,000
Business Acquisition, Purchase Price Allocation, Goodwill Amount	13,200
Lifecore [Member]
Business Acquisition, Cost of Acquired Entity, Cash Paid						40,000
Business Acquisition, Escrow Deposit						6,600
Business Acquisition, Contingent Consideration, Potential Cash Payment						10,000
Escrow Deposit Released						$ 3,300
Business Acquisition, Contingent Consideration, Cash Payment		$ 10,000
Business Acquisition, Cost of Acquired Entity, Cash Paid	62,900
Revenues			$ 102,074	$ 73,301
Business Acquisition, Contingent Consideration, at Fair Value	(3,926)
Business Acquisition, Cost of Acquired Entity, Purchase Price	66,826
Effective Income Tax Rate, Continuing Operations			37.00%	38.00%
Business Acquisition, Purchase Price Allocation, Goodwill Amount	13,158
Business Acquisition, Purchase Price Allocation, Net Deferred Tax Liabilities, Noncurrent	$ 1,900

Note 3 - Acquisitions (Detail) - Summary of the estimated fair values of GreenLines assets acquired and liabilities assumed: $ in Thousands	Apr. 23, 2012 USD ($)
Accounts receivable, net	$ 7,057
Inventories, net	1,409
Property and equipment	11,669
Other tangible assets	306
Intangible assets	43,500
Total identifiable assets acquired	63,941
Accounts payable and other liabilities	(8,391)
Deferred taxes	(1,882)
Total liabilities assumed	(10,273)
Net identifiable assets acquired	53,668
Goodwill	13,158
Net assets acquired	$ 66,826

Note 4 - Sale of Landec Ag (Detail)	Jun. 24, 2012 USD ($)
Pollinator Plus [Member]
Deferred Revenue	$ 300,000
Amortization Period Of Deferred Gain Loss On Divestiture Of Investment	7 years
Landec Ag LLC [Member]
Proceeds from Divestiture of Businesses, Net of Cash Divested	$ 600,000
Number of Licensing Agreements	2
Gain (Loss) on Sale of Business	$ 400,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ 100,000

Note 5 - Investments in non-public companies (Detail) - USD ($)	1 Months Ended			3 Months Ended
	May 31, 2012	Feb. 15, 2011	May 30, 2010	Aug. 26, 2012	Aug. 28, 2011	Aug. 28, 2011	May 27, 2012	Jul. 16, 2010
Preferred Stock [Member] \| Windset [Member]
Investments in and Advances to Affiliates, Balance, Shares (in Shares)		150,000
Common Stock [Member] \| Windset [Member] \| Apio [Member]
Common Stock, Value, Issued		$ 201
Common Stock [Member] \| Windset [Member]
Cost Method Investments		$ 15,000,000
Aesthetic Sciences [Member]
Long-term Investments				$ 793,000				$ 1,800,000
Other than Temporary Impairment Losses, Investments			$ 1,000,000
Windset [Member]
Investments in and Advances to Affiliates, Balance, Shares (in Shares)		0.201
Preferred Stock, Dividend Rate, Percentage		7.50%
Change in Market Value Of Investment in Company						$ 52,000
Other than Temporary Impairment Losses, Investments				1,000,000
Investments in and Advances to Affiliates, Balance, Shares (in Shares)		201
Cost Method Investments				793,000			$ 793,000
Common Stock, Value, Issued				26,000			$ 26,000
Dividends and Interest Paid	$ 1,100,000
Investment Income, Dividend				281,000	$ 281,000
Change in Market Value Of Investment in Company				$ 4,300,000

Note 6 - License Agreements (Detail) - USD ($)			1 Months Ended			3 Months Ended
Note 6 - License Agreements (Detail) - USD ($)	Jun. 24, 2012	Dec. 01, 2006	Jun. 30, 2010	Sep. 30, 2007	Mar. 31, 2006	Aug. 28, 2011
Monsanto [Member]
License Agreement Term		5 years
Termination Fee		$ 4,000,000
Licenses Revenue						$ 1,350,000
INCOTEC [Member]
License Agreement Term	7 years
Royalty Percentage	20.00%
Air Products [Member]
License Agreement Profit Percentage					40.00%
Chiquita [Member]
License Agreement Term				5 years
Windset [Member] \| Apio [Member]
Development Fee			$ 100,000
Annual License Fee Percentage			3.00%
Minimum [Member]
Annual Minimum License Fees			$ 150,000

Note 7 - Stock-Based Compensation (Detail) - USD ($)	3 Months Ended
Note 7 - Stock-Based Compensation (Detail) - USD ($)	Aug. 28, 2012	Aug. 26, 2012	Aug. 28, 2011
Restricted Stock Units (RSUs) [Member]
Share-based Compensation	$ 202,000	$ 157,000
Stock Options [Member]
Share-based Compensation	239,000	$ 191,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1 year 146 days
Share-based Compensation	$ 441,000	$ 348,000	$ 441,000
Share-Based Compensation Expense Per Share (in Dollars per share)	$ 0.02	$ 0.01
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		$ 1,400,000

Note 7 - Stock-Based Compensation (Detail) - The following table summarizes the stock-based compensation by income statement line item: - USD ($) $ in Thousands	3 Months Ended
	Aug. 26, 2012	Aug. 28, 2011
Research and Development Expense [Member]
Allocated stock-based compensation	$ 110,000	$ 124,000
Sales, General and Administrative [Member]
Allocated stock-based compensation	238,000	317,000
Allocated stock-based compensation	$ 348,000	$ 441,000

Note 8 - Diluted Net Income Per Share (Detail) - shares	3 Months Ended
Note 8 - Diluted Net Income Per Share (Detail) - shares	Aug. 26, 2012	Aug. 26, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	277,489	1,800,000

Note 9 - Income Taxes (Detail) - USD ($)	3 Months Ended
Note 9 - Income Taxes (Detail) - USD ($)	Aug. 26, 2012	Aug. 28, 2011	May 27, 2012
Income Tax Expense (Benefit)	$ 2,565,000	$ 1,110,000
Effective Income Tax Rate, Continuing Operations	37.00%	38.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%
Unrecognized Tax Benefits			$ 766,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate			$ 593,000
Unrecognized Tax Benefits Future Period	$ 8,000

Note 10 - Inventories (Detail) - Inventories are stated at the lower of cost (first-in, first-out method) or market and consisted of - USD ($) $ in Thousands	Aug. 26, 2012	May 27, 2012
Finished goods	$ 11,237	$ 9,406
Raw materials	9,160	9,876
Work in progress	3,146	2,729
Total	$ 23,543	$ 22,011

Note 11 - Debt (Detail)	1 Months Ended		3 Months Ended
Note 11 - Debt (Detail)	May 23, 2012 USD ($)	Apr. 23, 2012 USD ($)	Aug. 26, 2012 USD ($)	May 27, 2012 USD ($)	May 27, 2011 USD ($)
Remarketing Fee [Member]
Annual Re-Marketing Fee Percentage			0.125%
Annual Fees [Member]
Annual Letter of Credit Fee Percentage			0.75%
Apio [Member]
Minimum Fixed Charge Coverage Ratio			1.10 to 1.0
Lifecore [Member]
Minimum Fixed Charge Coverage Ratio			1.10 to 1.0
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums			$ 188,000
Minimum Quick Ratio			1.25 to 1.00
Apio [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 25,000,000
Debt Instrument, Basis Spread on Variable Rate		2.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.375%
Line of Credit Facility, Amount Outstanding			$ 7,500,000		$ 11,700,000
Term Loan [Member]
Long-term Debt	$ 12,000,000
Working Capital Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 8,000,000
Debt Instrument, Basis Spread on Variable Rate	1.85%
Term Loan [Member]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Long Term Debt Contractual Maturity Term	4 years
Debt Instrument, Periodic Payment, Principal	$ 250,000
Line of Credit Facility Term	1 year	5 years
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums			1,300,000	$ 139,000
Number of Financing Agreements	2
Long-term Debt			45,948,000	$ 47,317,000
Letters of Credit Outstanding, Amount	$ 3,500,000
Minimum Tangible Net Worth			$ 29,000,000

Note 11 - Debt (Detail) - Long-term debt consists of the following: - USD ($) $ in Thousands	Aug. 26, 2012	May 27, 2012
Real Estate Loan [Member]
Debt balance	$ 17,738	$ 17,957
Real Estate Bridge Loan [Member]
Debt balance	1,185	1,200
Capital Equipment Loan [Member]
Debt balance	12,275	12,660
Term Note [Member]
Debt balance	11,250	12,000
Industrial Revenue Bonds [Member]
Debt balance	3,500	3,500
Debt balance	45,948	47,317
Less current portion	(7,012)	(7,012)
Long-term portion	$ 38,936	$ 40,305

Note 12 - Derivative Financial Instruments (Detail) - USD ($)		1 Months Ended	3 Months Ended
	May 23, 2012	May 30, 2010	Aug. 26, 2012	May 27, 2012
Wells Fargo [Member]
Interest Rate Swap Term		5 years
Notional Amount of Cash Flow Hedge Instruments		$ 20,000,000
Derivative, Swaption Interest Rate		4.24%
Derivative, Notional Amount		$ 20,000,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 347,000
Derivative Liability, Fair Value, Gross Liability	$ 305,000			$ 347,000
Derivative Instruments, Gain Recognized in Income			$ 42,000

Note 13 - Related Party (Detail) - USD ($)	3 Months Ended
Note 13 - Related Party (Detail) - USD ($)	Aug. 26, 2012	Aug. 28, 2011	Aug. 28, 2011
Beachside [Member]
Revenue from Related Parties	$ 1,000,000	$ 1,100,000
Revenue from Related Parties	771,000		$ 980,000
Related Party Transaction, Due from (to) Related Party	268,000	323,000	323,000
Related Party Transaction, Amounts of Transaction	2,200,000	1,300,000
Accounts Payable, Related Parties	$ 533,000	$ 776,000	$ 776,000

Note 14 - Stockholders' Equity (Detail) - USD ($) shares in Millions, $ in Millions	4 Months Ended
	Nov. 17, 2010	Aug. 26, 2012
Common Stock, Capital Shares Reserved for Future Issuance		2.7
Stock Repurchase Program, Authorized Amount (in Dollars)	$ 10

Note 15 - Business Segment Reporting (Detail)	3 Months Ended
Note 15 - Business Segment Reporting (Detail)	Aug. 26, 2012	Aug. 28, 2011
Food Products Technology [Member]
Entity-Wide Revenue, Major Customer, Percentage	12.00%	16.00%
Number of Operating Segments	3
Entity-Wide Revenue Major Customer Number	5
Entity-Wide Revenue Top Customers Percentage	36.00%	43.00%

Note 15 - Business Segment Reporting (Detail) - Operations by segment consisted of the following: - USD ($) $ in Thousands	3 Months Ended
	Aug. 26, 2012	Aug. 28, 2011
Taiwan [Member]
Segment location	$ 12,900	$ 9,400
Indonesia [Member]
Segment location	6,100	7,400
Canada [Member]
Segment location	6,200	5,200
Japan [Member]
Segment location	3,100	2,500
Belgium [Member]
Segment location	3,000	1,900
All Other Countries [Member]
Segment location	5,000	3,700
Segment location	$ 102,074	$ 73,301