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Significant Accounting Policies - Basic and Diluted Earnings Per Common Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Mar. 30, 2013
Numerator:      
Net (loss) income $ (8,632) $ (5,801) $ 1,513
Denominator:      
Weighted-average common shares outstanding 17,937 16,617 13,538
(Loss) income per common share $ (0.48) $ (0.35) $ 0.11
Numerator:      
Net (loss) income $ (8,632) $ (5,801) $ 1,513
Denominator:      
Weighted-average common shares outstanding 17,937 16,617 13,538
Dilutive effect of stock options, warrants and stock appreciation rights (SARs)     6
Weighted-average common shares outstanding - diluted 17,937 16,617 13,544
Diluted (loss) income per common share $ (0.48) $ (0.35) $ 0.11