Consolidated Statement Of Changes in Shareholders' Equity - 3 months ended Jun. 24, 2017 - 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]	Total
Balance beginning at Mar. 25, 2017		$ 33	$ 390	$ (106,212)	$ 191,553	$ (3,161)	$ 498,651	$ 581,254
Beginning balance, preferred shares at Mar. 25, 2017		21,802						21,802
Beginning balance, common shares at Mar. 25, 2017			39,012,000	6,322,000
Net income							17,585	$ 17,585
Other comprehensive loss:
Pension liability adjustment ($80) pre-tax						(50)		(50)
Cash Dividends:
Preferred dividends	[1]						(92)	(92)
Common dividends	[1]						(5,890)	(5,890)
Exercise of stock options					653			653
Exercise of stock options, shares			33,000
Stock-based compensation					488			488
Balance ending at Jun. 24, 2017		$ 33	$ 390	$ (106,212)	$ 192,694	$ (3,211)	$ 510,254	$ 593,948
Ending balance, preferred shares at Jun. 24, 2017		21,802						21,802
Ending balance, common shares at Jun. 24, 2017			39,045,000	6,322,000

[1] First quarter fiscal year 2018 dividend payment of $.18 per common share or common share equivalent paid on June 12, 2017.