Consolidated Statements of Comprehensive Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	May 30, 2021	May 31, 2020
Net earnings	$ 2,745	$ 1,957
Other comprehensive earnings, net of tax:
Other comprehensive earnings	52	204
Total comprehensive earnings	2,797	2,161
Gains on Marketable Securities [Member]
Other comprehensive earnings, net of tax:
Unrealized holding gains (losses) arising during the period	94	288
Less: reclassification adjustment for gains (losses) included in net earnings	(4)	(17)
Losses on Marketable Securities [Member]
Other comprehensive earnings, net of tax:
Unrealized holding gains (losses) arising during the period	(38)	(67)
Less: reclassification adjustment for gains (losses) included in net earnings