Earnings Per Common Share (Reconciliation Of Basic And Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Mar. 25, 2017	Mar. 26, 2016	Mar. 28, 2015
Numerator for earnings per common share calculation:
Net income		$ 61,526	$ 66,805	$ 61,799
Less: Preferred stock dividends	[1]	(447)	(456)	(395)
Income available to common stockholders		$ 61,079	$ 66,349	$ 61,404
Denominator for earnings per common share calculation:
Weighted average common shares, basic		32,413	32,026	31,605
Effect of dilutive securities:
Preferred stock		675	760	760
Stock options		213	567	579
Weighted average common shares, diluted		33,301	33,353	32,944
Basic earnings per common share:		$ 1.88	$ 2.07	$ 1.94
Diluted earnings per common share:		$ 1.85	$ 2.00	$ 1.88

[1] Dividends paid per common share or common share equivalent were $.68, $.60 and $.52, respectively, for the years ended March 25, 2017, March 26, 2016 and March 28, 2015.