Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Jun. 29, 2013	Jun. 30, 2012
Numerator For Earnings Per Share Calculation [Abstract]
Net income	$ 13,572	$ 11,637
Preferred stock dividends	(84)	(76)
Income available to common shareholders	$ 13,488	$ 11,561
Denominator for earnings per common share calculation:
Weighted average common shares, basic	31,302,000	30,922,000
Effect of dilutive securities:
Preferred stock	760,000	760,000
Stock options	424,000	482,000
Weighted average number of common shares, diluted	32,486,000	32,164,000
Basic Earnings per common share:	$ 0.43	$ 0.37
Diluted Earnings per common share:	$ 0.42	$ 0.36
Antidilutive securities excluded from computation of earnings per share	176,000	566,000

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Equity impact of preferred stock cash dividends declared by an entity during the period. This element includes paid and unpaid dividends declared during the period.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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