Consolidated Statements of Comprehensive Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 27, 2022	Nov. 28, 2021	Nov. 27, 2022	Nov. 28, 2021
Net earnings	$ 2,230	$ 1,741	$ 6,025	$ 6,508
Other comprehensive earnings (loss), net of tax:
Other comprehensive loss	(718)	(485)	(2,318)	(494)
Total comprehensive earnings	1,512	1,256	3,707	6,014
Gains on Marketable Securities [Member]
Other comprehensive earnings (loss), net of tax:
Unrealized holding gains arising during the period	30	3	63	107
Less: reclassification adjustment for gains included in net earnings	0	(27)	(7)	(36)
Losses on Marketable Securities [Member]
Other comprehensive earnings (loss), net of tax:
Unrealized holding gains arising during the period	(773)	(472)	(2,407)	(576)
Less: reclassification adjustment for gains included in net earnings	$ 25	$ 11	$ 33	$ 11