Related Party Transactions - Additional Information (Detail) - SPA - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Earn-out consideration		$ 3,510
Common shares issuance lock-up period	12 months
Common stock shares issued on settlement of Earn-out consideration	326,276
CEO
Related Party Transaction [Line Items]
Common stock shares issued on settlement of Earn-out consideration	294,750
CFO
Related Party Transaction [Line Items]
Common stock shares issued on settlement of Earn-out consideration	921