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Earnings Per Common Share (Reconciliation Of Basic And Diluted Earnings Per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 28, 2015		Mar. 29, 2014		Mar. 30, 2013
Numerator For Earnings Per Share Calculation [Abstract]
Net income	$ 61,799us-gaap_NetIncomeLoss		$ 54,459us-gaap_NetIncomeLoss		$ 42,567us-gaap_NetIncomeLoss
Preferred stock dividends	(395)us-gaap_DividendsPreferredStockCash	[1]	(334)us-gaap_DividendsPreferredStockCash	[1]	(304)us-gaap_DividendsPreferredStockCash	[1]
Income available to common shareholders	$ 61,404us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic		$ 54,125us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic		$ 42,263us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Denominator for earnings per common share calculation:
Weighted average common shares, basic	31,605us-gaap_WeightedAverageNumberOfSharesOutstandingBasic		31,394us-gaap_WeightedAverageNumberOfSharesOutstandingBasic		31,067us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of dilutive securities:
Preferred stock	760us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock		760us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock		760us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock
Stock options	579us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements		488us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements		481us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Weighted average number of common shares, diluted	32,944us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding		32,642us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding		32,308us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic Earnings per common share:	$ 1.94us-gaap_EarningsPerShareBasic		$ 1.72us-gaap_EarningsPerShareBasic		$ 1.36us-gaap_EarningsPerShareBasic
Diluted Earnings per common share:	$ 1.88us-gaap_EarningsPerShareDiluted		$ 1.67us-gaap_EarningsPerShareDiluted		$ 1.32us-gaap_EarningsPerShareDiluted
[1] Dividends paid per common share or common share equivalent were $.52, $.44 and $.40, respectively, for the years ended March 28, 2015, March 29, 2014 and March 30, 2013.

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