Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	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, 2019	20,965,144				479,191
Balance at Mar. 03, 2019	$ 2,096	$ 169,395	$ (2,605)	$ (22)	$ (9,853)
Net earnings	0	0	9,552	0	0	$ 9,552
Unrealized gain (loss) on marketable securities, net of tax	$ 0	0	0	690	$ 0
Outstanding options, exercised (in shares)	0				(32,870)	(32,873)
Stock options exercised	$ 0	(259)	0	0	$ 676
Stock-based compensation	0	726	0	0	0
Cash dividends	$ 0	0	(28,721)	0	$ 0
Balance (in shares) at Mar. 01, 2020	20,965,144				446,321
Balance at Mar. 01, 2020	$ 2,096	169,862	(21,774)	668	$ (9,177)
Net earnings	0	0	4,864	0	0	$ 4,864
Unrealized gain (loss) on marketable securities, net of tax	$ 0	0	0	(1,004)	$ 0
Outstanding options, exercised (in shares)	0				(1,450)	(1,450)
Stock options exercised	$ 0	(15)	0	0	$ 27
Stock-based compensation	0	191	0	0	0
Cash dividends	$ 0	0	(8,153)	0	$ 0
Purchase of treasury stock (in shares)	0				137,397
Purchase of treasury stock	$ 0	0	0	0	$ (1,644)
Balance (in shares) at Feb. 28, 2021	20,965,144				582,268
Balance at Feb. 28, 2021	$ 2,096	170,038	(25,063)	(336)	$ (10,794)	$ 135,941
Net earnings	0	0	8,464	0	0	$ 8,464
Unrealized gain (loss) on marketable securities, net of tax	$ 0	0	0	(1,629)	$ 0
Outstanding options, exercised (in shares)	0				(75,334)	(75,334)
Stock options exercised	$ 0	(658)	0	0	$ 1,397
Stock-based compensation	0	285	0	0	0
Cash dividends	$ 0	0	(8,168)	0	$ 0
Balance (in shares) at Feb. 27, 2022	20,965,144				506,934
Balance at Feb. 27, 2022	$ 2,096	$ 169,665	$ (24,767)	$ (1,965)	$ (9,397)	$ 135,632