Consolidated Statements Of Changes in Shareholders' Equity - USD ($) $ in Thousands	Class C Convertible Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Total
Balance beginning at Mar. 30, 2019	$ 33	$ 395	$ (108,729)	$ 220,173	$ (4,536)	$ (582)	$ 592,174	$ (582)	$ 699,510
Beginning balance, preferred shares at Mar. 30, 2019	22,000
Beginning balance, common shares at Mar. 30, 2019		39,511,000	6,360,000
Net income							58,024		58,024
Other comprehensive income (loss)
Pension liability adjustment					(2,353)				(2,353)
Dividends declared
Preferred							(449)		(449)
Common							(29,266)		(29,266)
Dividend payable							(46)		(46)
Stock option and restricted stock		$ 1		5,788					5,789
Stock options and restricted stock, shares		134,000
Stock-based compensation				3,813					3,813
Balance ending at Mar. 28, 2020	$ 33	$ 396	$ (108,729)	229,774	(6,889)		619,855		734,440
Ending balance, preferred shares at Mar. 28, 2020	22,000
Ending balance, common shares at Mar. 28, 2020		39,645,000	6,360,000
Net income							34,319		34,319
Other comprehensive income (loss)
Pension liability adjustment					2,270				2,270
Dividends declared
Preferred							(438)		(438)
Common							(29,344)		(29,344)
Dividend payable							(31)		(31)
Conversion of Class C Preferred Stock	$ (4)	$ 1		3
Conversion of Class C Preferred Stock, shares	(2,000)	50,000
Stock option and restricted stock		$ 1		6,076					6,077
Stock options and restricted stock, shares		153,000
Stock-based compensation				2,391					2,391
Balance ending at Mar. 27, 2021	$ 29	$ 398	$ (108,729)	238,244	(4,619)		624,361		$ 749,684
Ending balance, preferred shares at Mar. 27, 2021	20,000								19,664
Ending balance, common shares at Mar. 27, 2021		39,848,000	6,360,000
Net income							61,568		$ 61,568
Other comprehensive income (loss)
Pension liability adjustment					125				125
Dividends declared
Preferred							(469)		(469)
Common							(34,205)		(34,205)
Dividend payable							(131)		(131)
Stock option and restricted stock		$ 1		2,003					2,004
Stock options and restricted stock, shares		59,000
Stock-based compensation				4,330					4,330
Balance ending at Mar. 26, 2022	$ 29	$ 399	$ (108,729)	$ 244,577	$ (4,494)		$ 651,124		$ 782,906
Ending balance, preferred shares at Mar. 26, 2022	20,000								19,664
Ending balance, common shares at Mar. 26, 2022		39,907,000	6,360,000