Note 12 - Earnings Per Common Share from Continuing Operations - Earnings per Common Share from Continuing Operations and Discontinued Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018
Net Earnings (Loss) From Continuing Operations	$ 24,428	$ (20,040)	$ 30,166	$ (27,834)
Deduct preferred stock dividends paid	6	6	17	17
Undistributed earnings (loss) from continuing operations	24,422	(20,046)	30,149	(27,851)
Earnings (loss) from continuing operations attributable to participating preferred	100	(79)	122	(109)
Earnings (loss) from continuing operations attributable to common shareholders	$ 24,322	$ (19,967)	$ 30,027	$ (27,742)
Weighted average common shares outstanding-basic (in shares)	9,176	9,625	9,307	9,694
Continuing Operations (in dollars per share)	$ 2.65	$ (2.07)	$ 3.23	$ (2.86)
Earnings (loss) from continuing operations attributable to common shareholders	$ 24,322	$ (19,967)	$ 30,027	$ (27,742)
Add dividends on convertible preferred stock	5		15
Earnings (loss) from continuing operations attributable to common stock on a diluted basis	$ 24,327	$ (19,967)	$ 30,042	$ (27,742)
Weighted average common shares outstanding-basic (in shares)	9,176	9,625	9,307	9,694
Additional shares issued related to the equity compensation plan (in shares)	2		2
Additional shares to be issued under full conversion of preferred stock (in shares)	67		67
Total shares for diluted (in shares)	9,245	9,625	9,376	9,694
Diluted earnings (loss) per common share from continuing operations (in dollars per share)	$ 2.63	$ (2.07)	$ 3.20	$ (2.86)
Net Earnings From Discontinued Operations (Net of Tax)	$ 955	$ 34,056	$ 955	$ 42,211
Deduct preferred stock dividends paid	6	6	17	17
Undistributed earnings from discontinued operations	949	34,050	938	42,194
Earnings from discontinued operations attributable to participating preferred	4	134	4	165
Earnings from discontinued operations attributable to common shareholders	$ 945	$ 33,916	$ 934	$ 42,029
Discontinued Operations (in dollars per share)	$ 0.10	$ 3.52	$ 0.10	$ 4.34
Earnings from discontinued operations attributable to common shareholders	$ 945	$ 33,916	$ 934	$ 42,029
Add dividends on convertible preferred stock	5	5	15	15
Earnings from discontinued operations attributable to common stock on a diluted basis	$ 950	$ 33,921	$ 949	$ 42,044
Additional shares issued related to the equity compensation plan (in shares)	2	2	2	2
Additional shares to be issued under full conversion of preferred stock	$ 67	$ 67	$ 67	$ 67
Total shares for diluted (in shares)	9,245	9,694	9,376	9,763
Diluted earnings per common share from discontinued operations (in dollars per share)	$ 0.10	$ 3.50	$ 0.10	$ 4.31