Selected Quarterly Financial Data (Unaudited) - Quarterly Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 03, 2019	Nov. 25, 2018	Aug. 26, 2018	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Mar. 03, 2019	Feb. 25, 2018	Feb. 26, 2017
Net sales	$ 16,659	$ 12,853	$ 11,211	$ 10,393	$ 9,920	$ 10,229	$ 11,355	$ 8,726
Gross profit	5,903	4,284	3,145	2,852	2,818	2,965	3,208	2,297	$ 16,184	$ 11,288	$ 8,299
Net earnings from continuing operations	1,588	2,078	1,824	816	17,197	344	859	72	6,306	18,472	(1,094)
Net earnings from discontinued operations	102,398	1,613	876	2,352	768	372	(339)	1,322	107,239	2,123	10,377
Net earnings (loss)	$ 103,986	$ 3,691	$ 2,700	$ 3,168	$ 17,965	$ 716	$ 520	$ 1,394	$ 113,545	$ 20,595	$ 9,283
Continuing Operations (in dollars per share)	$ 0.08	$ 0.10	$ 0.09	$ 0.04	$ 0.85	$ 0.02	$ 0.04		$ 0.31	$ 0.91	$ (0.05)
Discontinued Operations (in dollars per share)	5.02	0.08	0.04	0.12	0.04	0.02	(0.02)	0.07	5.29	0.11	0.51
Basic earnings per share (in dollars per share)	5.10	0.18	0.13	0.16	0.89	0.04	0.02	0.07	5.60	1.02	0.46
Continuing Operations (in dollars per share)	0.08	0.10	0.09	0.04	0.85	0.02	0.04		0.31	0.91	(0.05)
Discontinued Operations (in dollars per share)	4.99	0.08	0.04	0.12	0.04	0.02	(0.02)	0.07	5.26	0.11	0.51
Diluted earnings per share (in dollars per share)	$ 5.07	$ 0.18	$ 0.13	$ 0.16	$ 0.89	$ 0.04	$ 0.02	$ 0.07	$ 5.57	$ 1.02	$ 0.46
Basic (in shares)	20,370	20,278	20,253	20,242	20,238	20,237	20,236	20,235	20,288	20,237	20,235
Diluted weighted average shares (in shares)	20,501	20,352	20,382	20,296	20,311	20,261	20,250	20,244	20,385	20,267	20,239