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Capital Stock - Summary of Common Stock Outstanding (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Mar. 31, 2012
Class of Stock [Line Items]      
Beginning Balance, Shares 14,833,611 11,391,585  
Exercise of stock options, Shares 74,813   1,080
Exercise of stock options $ 74   $ 1
Stock rights offering, Shares   3,442,026  
Private Placement, Shares 2,941,085    
Private Placement 4,861    
Ending Balance, Shares 17,849,509 14,833,611 11,391,585
Balance as of beginning balance 64,489 60,896  
Stock rights offering 4,861 3,593  
Balance as of ending balance 69,475 64,489 60,896
Class A Common Stock [Member]
      
Class of Stock [Line Items]      
Beginning Balance, Shares 7,115,641 3,673,615  
Exercise of stock options, Shares 74,813    
Exercise of stock options 125    
Stock rights offering, Shares   3,442,026  
Private Placement, Shares 2,941,085    
Private Placement 4,861    
Ending Balance, Shares 10,131,539 7,115,641  
Balance as of beginning balance 25,876 [1] 22,283  
Stock rights offering   3,593  
Balance as of ending balance 30,862 [1] 25,876 [1]  
Class B Common Stock [Member]
      
Class of Stock [Line Items]      
Ending Balance, Shares 7,717,970 7,717,970 7,717,970
Balance as of ending balance $ 38,613 [1] $ 38,613 [1] $ 38,613
[1] unlimited shares authorized