Consolidated Statements of Shareholders' Equity (Unaudited) - 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 Feb. 28, 2021	20,965,144				582,268
Balance at Feb. 28, 2021	$ 2,096,000	$ 170,038,000	$ (25,063,000)	$ (336,000)	$ (10,794,000)
Net earnings	0	0	2,745,000	0	0
Net earnings	0	0	2,745,000	0	0
Unrealized holding gains arising during the period	0	0	0	52,000	0
Stock-based compensation	0	64,000	0	0	$ 0
Cash dividends ($0.10 per share)	0	0	(2,038,000)	0
Cash dividends	$ (0)	(0)	2,038,000	(0)
Balance (in shares) at May. 30, 2021	20,965,144				582,268
Balance at May. 30, 2021	$ 2,096,000	170,102,000	(24,356,000)	(284,000)	$ (10,794,000)
Balance (in shares) at Feb. 28, 2021	20,965,144				582,268
Balance at Feb. 28, 2021	$ 2,096,000	170,038,000	(25,063,000)	(336,000)	$ (10,794,000)
Net earnings						$ 4,767,000
Net earnings						4,767,000
Balance (in shares) at Aug. 29, 2021	20,965,144				536,134
Balance at Aug. 29, 2021	$ 2,096,000	169,779,000	(24,373,000)	(345,000)	$ (9,939,000)
Balance (in shares) at May. 30, 2021	20,965,144				582,268
Balance at May. 30, 2021	$ 2,096,000	170,102,000	(24,356,000)	(284,000)	$ (10,794,000)
Net earnings	0	0	2,022,000	0	0	2,022,000
Net earnings	0	0	2,022,000	0	0	2,022,000
Unrealized holding gains arising during the period	0	0	0	(61,000)	0
Stock-based compensation		74,000	0	0	0
Cash dividends ($0.10 per share)	0	0	(2,039,000)	0	0
Cash dividends	$ (0)	(0)	2,039,000	(0)	$ (0)
Stock options exercised (in shares)	0				(46,134)
Stock options exercised	$ 0	(397,000)	0	0	$ 855,000
Balance (in shares) at Aug. 29, 2021	20,965,144				536,134
Balance at Aug. 29, 2021	$ 2,096,000	169,779,000	(24,373,000)	(345,000)	$ (9,939,000)
Balance (in shares) at Feb. 27, 2022	20,965,144				506,934
Balance at Feb. 27, 2022	$ 2,096,000	169,665,000	(24,767,000)	(1,965,000)	$ (9,397,000)	135,632,000
Net earnings	0	0	1,910,000	0	0
Net earnings	0	0	1,910,000	0	0
Unrealized holding gains arising during the period	0	0	0	(933,000)	0
Stock-based compensation		85,000	0	0	0
Cash dividends ($0.10 per share)	0	0	(2,046,000)	0	0
Cash dividends	$ (0)	(0)	2,046,000	(0)	$ (0)
Balance (in shares) at May. 29, 2022	20,965,144				506,934
Balance at May. 29, 2022	$ 2,096,000	169,750,000	(24,903,000)	(2,898,000)	$ (9,397,000)
Balance (in shares) at Feb. 27, 2022	20,965,144				506,934
Balance at Feb. 27, 2022	$ 2,096,000	169,665,000	(24,767,000)	(1,965,000)	$ (9,397,000)	135,632,000
Net earnings						3,795,000
Net earnings						$ 3,795,000
Stock options exercised (in shares)						(13,000)
Balance (in shares) at Aug. 28, 2022	20,965,144				493,934
Balance at Aug. 28, 2022	$ 2,096,000	169,742,000	(25,064,000)	(3,565,000)	$ (9,156,000)	$ 134,053,000
Balance (in shares) at May. 29, 2022	20,965,144				506,934
Balance at May. 29, 2022	$ 2,096,000	169,750,000	(24,903,000)	(2,898,000)	$ (9,397,000)
Net earnings	0	0	1,885,000	0	0	1,885,000
Net earnings	0	0	1,885,000	0	0	1,885,000
Unrealized holding gains arising during the period	0	0	0	(667,000)	0
Stock-based compensation	0	94,000	0	0	0
Cash dividends ($0.10 per share)	0	0	(2,046,000)	0	0
Cash dividends	$ (0)	(0)	2,046,000	(0)	$ (0)
Stock options exercised (in shares)	0				(13,000,000)
Stock options exercised	$ 0	(102,000)	0	0	$ 241,000
Balance (in shares) at Aug. 28, 2022	20,965,144				493,934
Balance at Aug. 28, 2022	$ 2,096,000	$ 169,742,000	$ (25,064,000)	$ (3,565,000)	$ (9,156,000)	$ 134,053,000