Consolidated Statements of Comprehensive Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2020	Jun. 02, 2019
Net earnings	$ 1,957	$ 2,587
Other comprehensive earnings, net of tax:
Other comprehensive earnings	204	346
Total comprehensive earnings	2,161	2,933
Gains on Marketable Securities [Member]
Other comprehensive earnings, net of tax:
Unrealized holding gains (losses) arising during the period	288	344
Less: reclassification adjustment for gains (losses) included in net earnings	(17)	(8)
Losses on Marketable Securities [Member]
Other comprehensive earnings, net of tax:
Unrealized holding gains (losses) arising during the period	(67)	(3)
Less: reclassification adjustment for gains (losses) included in net earnings		$ 13