Note 13 - Stockholders' Equity (Detail) - Consolidated Statements of Changes in Stockholders' Equity: (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 25, 2012	Nov. 27, 2011	Nov. 25, 2012	Nov. 27, 2011
Common Stock Shares
Balance, Common Stock Shares (in Shares)			25,644,580
Stock options exercised, net of shares tendered (in Shares)			128,106
Vested restricted stock units, net of shares tendered (in Shares)			11,248
Balance, Common Stock Shares (in Shares)	25,783,934		25,783,934
Common Stock
Balance, Common Stock			$ 26
Balance, Common Stock	26		26
Additional Paid-in Capital
Balance, Additional Paid-in Capital			119,894
Stock options exercised, net of shares tendered			651
Taxes paid by Company for RSUs vested			(49)
Stock-based compensation expense			671
Tax-benefit from stock based compensation expense			1,814
Balance, Additional Paid-in Capital	122,981		122,981
Retained Earnings
Balance, Retained Earnings			29,822
Net income	8,913	3,340	13,279	5,152
Balance, Retained Earnings	43,101		43,101
Non controlling Interest
Balance, Non controlling interest			1,816
Non controlling interest in net income	59	98	156	239
Distributions to non controlling interest			(320)	(257)
Balance, Non controlling interest	$ 1,652		$ 1,652