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Pro Forma Consolidated Financial Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Revenue $ 51,938 $ 44,359 $ 100,761 $ 87,042
Income before income tax provision 4,557 329 2,770 (1,850)
Net income (loss) $ 4,218 $ (41) $ 2,260 $ (2,631)