Consolidated Statements of Shareholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Mar. 03, 2013	20,831,578				4,066
Balance at Mar. 03, 2013	$ 2,083,000	$ 158,790,000	$ 138,514,000	$ 629,000	$ (94,000)
Net earnings (loss)			(42,329,000)			$ (42,329,000)
Foreign currency translation				420,000		$ 420,000
Unrealized gain on marketable securities, net of tax				172,000
Stock options exercised (in shares)	51,266					51,266
Stock options exercised	$ 5,000	1,157,000
Stock-based compensation		1,730,000
Repurchase of treasury shares (in shares)					8
Cash dividends ($2.90 per share)			(60,534,000)
Balance (in shares) at Mar. 02, 2014	20,882,844				4,074
Balance at Mar. 02, 2014	$ 2,088,000	161,677,000	35,651,000	1,221,000	$ (94,000)
Unrealized holding gains (losses) arising during the period				172,000
Net earnings (loss)			20,043,000			$ 20,043,000
Foreign currency translation				185,000		$ 185,000
Unrealized gain on marketable securities, net of tax				62,000
Stock options exercised (in shares)	79,800					79,800
Stock options exercised	$ 8,000	1,724,000
Stock-based compensation		1,418,000
Repurchase of treasury shares (in shares)					126,567
Cash dividends ($2.90 per share)			(39,646,000)
Balance (in shares) at Mar. 01, 2015	20,962,644				130,641
Balance at Mar. 01, 2015	$ 2,096,000	$ 164,819,000	16,048,000	1,468,000	$ (2,832,000)	$ 181,599,000
Repurchase of treasury shares					$ (2,738,000)
Unrealized holding gains (losses) arising during the period				62,000
Net earnings (loss)			$ 18,029,000			18,029,000
Foreign currency translation				62,000		$ 62,000
Unrealized gain on marketable securities, net of tax				(59,000)
Stock options exercised (in shares)	2,500					2,500
Stock options exercised		$ 44,000
Stock-based compensation		1,535,000
Repurchase of treasury shares (in shares)					599,832
Cash dividends ($2.90 per share)			$ (8,155,000)
Balance (in shares) at Feb. 28, 2016	20,965,144				730,473
Balance at Feb. 28, 2016	$ 2,096,000	$ 166,398,000	$ 25,922,000	1,471,000	$ (15,020,000)	$ 180,867,000
Repurchase of treasury shares					$ (12,188,000)
Unrealized holding gains (losses) arising during the period				$ (59,000)