Note 8 - Shareholders' Equity (Details Textual) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Mar. 10, 2016	Aug. 27, 2017	Aug. 27, 2017	Aug. 28, 2016	Oct. 03, 2016	Jan. 08, 2015	Jan. 07, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		2,775
Proceeds from Sale of Treasury Stock, Stock Options Exercised		$ 39
Stock Repurchase Program, Number of Shares Authorized to be Repurchased						1,250,000
Common Stock, Shares, Outstanding					20,237,446		20,945,634
Stock Repurchase Program, Number of Additional Shares Authorized to be Repurchased	1,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased		1,531,412	1,531,412
Stock Repurchase Program, Percentage of Outstanding Shares Authorized to be Repurchased					7.60%		6.00%
Stock Repurchased During Period, Shares			0	0
Employee Stock Option [Member]
Allocated Share-based Compensation Expense, Net of Tax		$ 459