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Consolidated Statements Of Changes in Shareholders' Equity - USD ($) $ in Thousands		Class C Convertible Preferred Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Class C Convertible Preferred Stock [Member]	Common Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock [Member]	Treasury Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Total
Balance beginning at Mar. 30, 2019		$ 33	$ 33	$ 395	$ 395	$ (108,729)	$ (108,729)	$ 220,173	$ 220,173	$ (4,536)	$ (4,536)	$ (582)	$ 591,592	$ 592,174	$ (582)	$ 698,928	$ 699,510
Beginning balance, preferred shares at Mar. 30, 2019		22,000	22,000
Beginning balance, common shares at Mar. 30, 2019				39,511,000	39,511,000	6,360,000	6,360,000
Net income														22,606			22,606
Other comprehensive loss:
Pension liability adjustment											(89)						(89)
Cash dividends:
Preferred	[1]													(112)			(112)
Common	[1]													(7,305)			(7,305)
Dividend payable														(10)			(10)
Activity related to equity-based plans					$ 1				3,644								3,645
Activity related to equity-based plans, shares					71,000
Stock-based compensation									925								925
Balance ending at Jun. 29, 2019			$ 33		$ 396		$ (108,729)		224,742		(4,625)			606,771			718,588
Ending balance, preferred shares at Jun. 29, 2019			22,000
Ending balance, common shares at Jun. 29, 2019					39,582,000		6,360,000
Balance beginning at Mar. 28, 2020			$ 33		$ 396		$ (108,729)		229,774		(6,889)			619,855			$ 734,440
Beginning balance, preferred shares at Mar. 28, 2020			22,000														21,802
Beginning balance, common shares at Mar. 28, 2020					39,645,000		6,360,000
Net income														2,987			$ 2,987
Other comprehensive loss:
Pension liability adjustment											(170)						(170)
Cash dividends:
Preferred	[1]													(112)			(112)
Common	[1]													(7,323)			(7,323)
Dividend payable														(11)			(11)
Activity related to equity-based plans									5								5
Activity related to equity-based plans, shares					1,000
Stock-based compensation									904								904
Balance ending at Jun. 27, 2020			$ 33		$ 396		$ (108,729)		$ 230,683		$ (7,059)			$ 615,396			$ 730,720
Ending balance, preferred shares at Jun. 27, 2020			22,000														21,802
Ending balance, common shares at Jun. 27, 2020					39,646,000		6,360,000
[1] First quarter fiscal year dividend payments of $0.22 per common share or common share equivalent paid on June 22, 2020 and June 17, 2019.

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