Consolidated Statement Of Changes in Shareholders' Equity - 6 months ended Sep. 23, 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							34,852	$ 34,852
Other comprehensive loss:
Pension liability adjustment ($160) pre-tax						(100)		(100)
Cash Dividends:
Preferred dividends	[1]						(184)	(184)
Common dividends	[1]						(11,798)	(11,798)
Exercise of stock options			$ 1	$ (351)	2,799			2,449
Exercise of stock options, shares			89,000	8,000
Stock-based compensation					1,202			1,202
Balance ending at Sep. 23, 2017		$ 33	$ 391	$ (106,563)	$ 195,554	$ (3,261)	$ 521,521	$ 607,675
Ending balance, preferred shares at Sep. 23, 2017		21,802						21,802
Ending balance, common shares at Sep. 23, 2017			39,101,000	6,330,000

[1] Represents first and second quarter fiscal year 2018 dividends of $.18 per common share or common share equivalent each quarter, declared on May 18, 2017 and August 15, 2017, respectively.