Note 18 - Derivative Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended			3 Months Ended	9 Months Ended	19 Months Ended
	May 18, 2012	Aug. 05, 2011	Feb. 15, 2011	Mar. 24, 2013	Mar. 24, 2013	Feb. 28, 2015	May 31, 2013
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge	5 years	21 months	27 months
Notional Amount of Interest Rate Cash Flow Hedge Derivatives	$ 50,000	$ 10,000	$ 25,000			$ 50,000	$ 85,000
Derivative, Swaption Interest Rate		0.75%	1.39%	1.06%	1.06%
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges Effect before Tax				58	58
Quarterly Decrease in Notional Amount of Interest Rate Cash Flow Hedge Derivatives						5,000
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net				106	198
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net				578	578
Derivative Instruments, Gain Recognized in Income				$ 103	$ 177