Acquisitions - Summary of Pro Forma Results of Operation (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015
Business Acquisition [Line Items]
Net revenues	$ 46,084	$ 133,297
Net (loss) income attributable to common shareholders	$ 1,582	$ (13,517)
Earnings per share:
Basic	$ 0.02	$ (0.19)
Diluted	$ 0.02	$ (0.19)
Pro Forma [Member]
Business Acquisition [Line Items]
Net revenues	$ 47,712	$ 138,531
Net (loss) income attributable to common shareholders	$ 2,130	$ (12,370)
Earnings per share:
Basic	$ 0.03	$ (0.18)
Diluted	$ 0.03	$ (0.18)
WAM Technologies, LLC [Member]
Business Acquisition [Line Items]
Net revenues	$ 1,628	$ 5,234
Net (loss) income attributable to common shareholders	$ 548	$ 1,147