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Capital Stock - Summary of Common Stock Outstanding (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 28, 2015 | Mar. 29, 2014
Class of Stock [Line Items] |  |  |
Beginning Balance, Shares | 17,849,509 |  |
Exercise of stock options, Shares | 111,372 |  | 74,813
Ending Balance, Shares | 17,960,881 |  | 17,849,509
Balance as of beginning balance | $ 69,475 |  |
Exercise of stock options | 116 |  | $ 74
Balance as of ending balance | $ 69,601 |  | $ 69,475
Class A Common Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Beginning Balance, Shares | 10,131,539 |  |
Exercise of stock options, Shares | 111,372 |  |
Ending Balance, Shares | 10,242,911 |  | 10,131,539
Balance as of beginning balance | $ 30,862 |  |
Exercise of stock options | 126 |  |
Balance as of ending balance | $ 30,988 | [1] | $ 30,862
Class B Common Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Beginning Balance, Shares | 7,717,970 |  |
Ending Balance, Shares | 7,717,970 |  | 7,717,970
Balance as of beginning balance | $ 38,613 |  |
Balance as of ending balance | $ 38,613 | [1] | $ 38,613
[1] | unlimited shares authorized

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