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

9 Months Ended

Mar. 01, 2015

Notes Tables

Schedule of Effect of Significant Unobservable Inputs for Investment [TableText Block]

		At March 1, 2015					At May 25, 2014
Revenue growth rates			4%					4%
Expense growth rates			4%					4%
Income tax rates			15%					15%
Discount rates		15%	to	21%			16%	to	22%

Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block]

Impact on value of Windset investment as of March 1, 2015
10% increase in revenue growth rates		$	2,100
10% increase in expense growth rates		$	(1,800	)
10% increase in income tax rates		$	(100	)
10% increase in discount rates		$	(1,700	)

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

		Fair Value at March 1, 2015												Fair Value at May 25, 2014
		Level 1				Level 2				Level 3				Level 1				Level 2				Level 3
Assets:
Investment in private company			-				-				61,100				-				-				39,600
Total		$	-			$	-			$	61,100			$	-			$	-			$	39,600

Liabilities:
Interest rate swap			-				2				-				-				44				-
Total		$	-			$	2			$	-			$	-			$	44			$	-

Revenue Recognition, Multiple-deliverable Arrangements [Table Text Block]

		Three months ended March 1 , 201 5				Three months ended February 23 , 201 4				Nine months ended March 1 , 201 5				Nine months ended February 23 , 201 4
Recorded upon shipment		$	128,502			$	112,902			$	344,506			$	295,314
Recorded upon acceptance in foreign port			8,086				10,677				56,779				55,006
Revenue from license fees, R&D contracts and royalties/profit sharing			153				447				788				648
Revenue from multiple element arrangements			1,789				2,353				2,736				4,916
Total		$	138,530			$	126,379			$	404,809			$	355,884