Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common [Member]	Total
Balance, August 27, 2023 (in shares)	20,965,144				506,934
Balance, August 27, 2023	$ 2,096	$ 169,665	$ (24,767)	$ (1,965)	$ (9,397)
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)
Net earnings	0	0	1,910	0	0
Net earnings	0	0	1,910	0	0
Unrealized gain (loss) on marketable securities, net of tax	0	0	0	(933)	0
Stock-based compensation	0	85	0	0	0
Cash dividends	0	0	(2,046)	0	0
Cash dividends ($0.125 per share)	$ (0)	(0)	2,046	(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)
Net earnings						$ 6,025
Net earnings						6,025
Balance, August 27, 2023 (in shares)	20,965,144				506,934
Balance, August 27, 2023	$ 2,096	169,750	(24,903)	(2,898)	$ (9,397)
Balance (in shares) at May. 29, 2022	20,965,144				506,934
Balance at May. 29, 2022	$ 2,096	169,750	(24,903)	(2,898)	$ (9,397)
Net earnings	0	0	1,885	0	0
Net earnings	0	0	1,885	0	0
Unrealized gain (loss) on marketable securities, net of tax	0	0	0	(667)	0
Stock-based compensation	0	94	0	0	0
Cash dividends	0	0	(2,046)	0	0
Cash dividends ($0.125 per share)	$ 0	0	2,046	0	$ 0
Stock options exercised (in shares)	0				(13,000)
Stock options exercised	$ 0	(102)	0	0	$ 241
Balance, August 27, 2023 (in shares)	20,965,144				493,934
Balance, August 27, 2023	$ 2,096	169,742	(25,064)	(3,565)	$ (9,156)
Balance (in shares) at Aug. 28, 2022	20,965,144				493,934
Balance at Aug. 28, 2022	$ 2,096	169,742	(25,064)	(3,565)	$ (9,156)
Net earnings	0	0	2,230	0	0	2,230
Net earnings	0	0	2,230	0	0	2,230
Unrealized gain (loss) on marketable securities, net of tax	0	0	0	(718)	0
Stock-based compensation	0	95	0	0	0
Cash dividends	0	0	(2,047)	0	0
Cash dividends ($0.125 per share)	$ 0	0	2,047	0	$ 0
Balance, August 27, 2023 (in shares)	20,965,144				493,934
Balance, August 27, 2023	$ 2,096	169,837	(24,881)	(4,283)	$ (9,156)
Balance, August 27, 2023 (in shares)	20,965,144				493,934
Balance, August 27, 2023	$ 2,096	169,932	(42,694)	(4,244)	$ (9,156)	115,934
Balance (in shares) at Feb. 26, 2023	20,965,144				493,934
Balance at Feb. 26, 2023	$ 2,096	169,932	(42,694)	(4,244)	$ (9,156)	115,934
Net earnings	0	0	1,854	0
Net earnings	0	0	1,854	0
Unrealized gain (loss) on marketable securities, net of tax	0	0	0	716	0
Stock-based compensation	$ 0	218	0	0	$ 0
Purchase of treasury stock (in shares)	0				129,654
Purchase of treasury stock	$ 0	0	0	0	$ (1,669)
Cash dividends	0	0	(2,559)	0	0
Repurchase of treasury shares	(0)	(0)	(0)	(0)	1,669
Cash dividends ($0.125 per share)	$ (0)	(0)	2,559	(0)	$ (0)
Balance (in shares) at Feb. 26, 2023	20,965,144				493,934
Balance at Feb. 26, 2023	$ 2,096	169,932	(42,694)	(4,244)	$ (9,156)	115,934
Net earnings						4,803
Net earnings						$ 4,803
Stock options exercised (in shares)						875
Balance, August 27, 2023 (in shares)	20,965,144				623,588
Balance, August 27, 2023	$ 2,096	170,150	(43,399)	(3,528)	$ (10,825)
Balance (in shares) at May. 28, 2023	20,965,144				623,588
Balance at May. 28, 2023	$ 2,096	170,150	(43,399)	(3,528)	$ (10,825)
Net earnings	0	0	1,746	0	0
Net earnings	0	0	1,746	0	0
Unrealized gain (loss) on marketable securities, net of tax	0	0	0	110	0
Stock-based compensation	0	104	0	0	$ 0
Purchase of treasury stock (in shares)					91,445
Purchase of treasury stock	0	0	0	0	$ (1,211)
Cash dividends	0	0	(2,531)	0	0
Repurchase of treasury shares	0	0	0	0	1,211
Cash dividends ($0.125 per share)	$ 0	0	2,531	0	$ 0
Balance, August 27, 2023 (in shares)	20,965,144				715,033
Balance, August 27, 2023	$ 2,096	170,254	(44,184)	(3,418)	$ (12,036)
Balance (in shares) at Aug. 27, 2023	20,965,144				715,033
Balance at Aug. 27, 2023	$ 2,096	170,254	(44,184)	(3,418)	$ (12,036)
Net earnings	0	0	1,203	0	0	$ 1,203
Net earnings	0	0	1,203	0	0	1,203
Unrealized gain (loss) on marketable securities, net of tax	0	0	0	490	0
Stock-based compensation	0	103	0	0	0
Cash dividends	0	0	(2,532)	0	0
Cash dividends ($0.125 per share)	$ 0	0	2,532	0	$ 0
Stock options exercised (in shares)	0				(875)
Stock options exercised	$ 0	(5)	0	0	$ 14
Balance, August 27, 2023 (in shares)	20,965,144				714,158
Balance, August 27, 2023	$ 2,096	$ 170,352	$ (45,513)	$ (2,928)	$ (12,022)	$ 111,985