Consolidated Statements of Operations - USD ($) shares in Thousands	12 Months Ended
	Mar. 03, 2019	Feb. 25, 2018	Feb. 26, 2017
Net sales	$ 51,116,000	$ 40,230,000	$ 31,837,000
Cost of sales	34,932,000	28,942,000	23,538,000
Gross profit	16,184,000	11,288,000	8,299,000
Selling, general and administrative expenses	8,968,000	9,862,000	10,309,000
Restructuring charges (Note 8)		146,000
Earnings (loss) from continuing operations	7,216,000	1,280,000	(2,010,000)
Interest expense (Note 10)	0	2,269,000	1,432,000
Interest and other income	2,379,000	2,641,000	1,637,000
Loss on sale of marketable securities	(1,498,000)	(1,342,000)
Earnings (loss) from continuing operations before income taxes	8,097,000	310,000	(1,805,000)
Income tax provision (benefit) (Note 4)	1,791,000	(18,162,000)	(711,000)
Net earnings (loss) from continuing operations	6,306,000	18,472,000	(1,094,000)
Earnings from discontinued operations, net of tax (Note 13)	107,239,000	2,123,000	10,377,000
Net earnings	$ 113,545,000	$ 20,595,000	$ 9,283,000
Basic:
Continuing Operations (in dollars per share)	$ 0.31	$ 0.91	$ (0.05)
Discontinued Operations (in dollars per share)	5.29	0.11	0.51
Basic earnings per share (in dollars per share)	$ 5.60	$ 1.02	$ 0.46
Basic weighted average shares (in shares)	20,288	20,237	20,235
Diluted:
Continuing Operations (in dollars per share)	$ 0.31	$ 0.91	$ (0.05)
Discontinued Operations (in dollars per share)	5.26	0.11	0.51
Diluted earnings per share (in dollars per share)	$ 5.57	$ 1.02	$ 0.46
Diluted weighted average shares (in shares)	20,385	20,267	20,239