Selected Quarterly Financial Data (Unaudited) - Quarterly Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended									12 Months Ended
	Feb. 27, 2022	Nov. 28, 2021	Nov. 28, 2021	Aug. 29, 2021	May 30, 2021	Feb. 28, 2021	Nov. 29, 2020	Aug. 30, 2020	May 31, 2020	Feb. 27, 2022	Feb. 28, 2021	Mar. 01, 2020
Net sales	$ 12,502		$ 13,864	$ 13,618	$ 13,594	$ 14,441	$ 10,372	$ 9,250	$ 12,213
Gross profit	4,198		3,836	4,411	5,472	4,326	2,553	2,638	3,674	$ 17,917	$ 13,191	$ 18,673
Net earnings - continuing operations	1,956		1,741	2,022	2,745	1,032	1,037	1,151	1,972	8,464	5,192	10,205
Net (loss) earnings - discontinued operations	0		0	0	0	0	(116)	(197)	(15)	0	(328)	(653)
Net earnings	$ 1,956		$ 1,741	$ 2,022	$ 2,745	$ 1,032	$ 921	$ 954	$ 1,957	$ 8,464	$ 4,864	$ 9,552
Basic earnings per share - continuing operations (in dollars per share)	$ 0.10		$ 0.09	$ 0.10	$ 0.13	$ 0.05	$ 0.05	$ 0.06	$ 0.10	$ 0.41	$ 0.25	$ 0.50
Basic (loss) earnings per share - discontinued operations (in dollars per share)	0		0	0	0	0	0	(0.01)	0	0	(0.01)	(0.03)
Basic earnings per share (in dollars per share)	0.10		0.09	0.10	0.13	0.05	0.05	0.05	0.10	0.41	0.24	0.47
Diluted earnings per share - continuing operations (in dollars per share)	0.10		0.08	0.10	0.13	0.05	0.05	0.06	0.10	0.41	0.25	0.50
Diluted (loss) earnings per share - discontinued operations (in dollars per share)	0		0	0	0	0	0	(0.01)	0	0	(0.01)	(0.03)
Diluted earnings per share (in dollars per share)	$ 0.10		$ 0.08	$ 0.10	$ 0.13	$ 0.05	$ 0.05	$ 0.05	$ 0.10	$ 0.41	$ 0.24	$ 0.47
Weighted average common shares (in shares)	20,458	20,450		20,397	20,383	20,382	20,381	20,381	20,402	20,422	20,387	20,507
Weighted average shares outstanding for diluted EPS (in shares)	20,508	20,503		20,485	20,710	20,587	20,434	20,433	20,460	20,551	20,478	20,595