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Acquisitions-Schedule of Unaudited Pro forma Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Business Acquisition Pro Forma Information [Abstract]    
Revenue $ 23,405 $ 67,289
Net income (loss) $ (35) $ (450)
Income (loss) per share    
Basic $ 0 $ (10)
Diluted $ 0 $ (10)