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Stock-based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 29, 2012
Dec. 31, 2011
Mar. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]          
Number of common stock shares authorized to issue 3,197,395   3,197,395    
Common stock, par value $ 0.001   $ 0.001   $ 0.001
Stock-based compensation expense $ 1,791 $ 2,087 $ 6,397 $ 7,505  
Tax benefit from stock-based compensation expense $ 658 $ 766 $ 2,351 $ 2,754