Note 7 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 01, 2020	Dec. 01, 2019	Sep. 01, 2019	Jun. 02, 2019	Mar. 03, 2019	Nov. 25, 2018	Aug. 26, 2018	May 27, 2018	Mar. 01, 2020	Mar. 03, 2019	Feb. 25, 2018
Net earnings - continuing operations	$ 2,633	$ 2,806	$ 2,052	$ 2,714	$ 1,588	$ 2,078	$ 1,824	$ 816	$ 10,205	$ 6,306	$ 18,472
Net (loss) earnings - discontinued operations	(249)	(360)	83	(127)	102,398	1,613	876	2,352	(653)	107,239	2,123
Net earnings	$ 2,384	$ 2,446	$ 2,135	$ 2,587	$ 103,986	$ 3,691	$ 2,700	$ 3,168	$ 9,552	$ 113,545	$ 20,595
Weighted average common shares outstanding for basic EPS (in shares)	20,519	20,518	20,499	20,492	20,370	20,278	20,253	20,242	20,507	20,288	20,237
Net effect of dilutive options (in shares)									88	97	30
Weighted average shares outstanding for diluted EPS (in shares)	20,578	20,617	20,601	20,586	20,501	20,352	20,382	20,296	20,595	20,385	20,267
Basic earnings per share - continuing operations (in dollars per share)	$ 0.13	$ 0.14	$ 0.10	$ 0.13	$ 0.08	$ 0.10	$ 0.09	$ 0.04	$ 0.50	$ 0.31	$ 0.91
Basic (loss) earnings per share - discontinued operations (in dollars per share)	(0.01)	(0.02)			5.02	0.08	0.04	0.12	(0.03)	5.29	0.11
Basic earnings per share (in dollars per share)	0.12	0.12	0.10	0.13	5.10	0.18	0.13	0.16	0.47	5.60	1.02
Diluted earnings per share - continuing operations (in dollars per share)	0.13	0.14	0.10	0.13	0.08	0.10	0.09	0.04	0.50	0.31	0.91
Diluted (loss) earnings per share - discontinued operations (in dollars per share)	(0.01)	(0.02)			4.99	0.08	0.04	0.12	(0.03)	5.26	0.11
Diluted earnings per share (in dollars per share)	$ 0.12	$ 0.12	$ 0.10	$ 0.13	$ 5.07	$ 0.18	$ 0.13	$ 0.16	$ 0.47	$ 5.57	$ 1.02