Acquisitions - Summary of Pro Forma Results of Operation (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Net revenues	$ 178,293	$ 96,242
Net (loss) income attributable to common shareholders	$ (13,287)	$ (4,721)
Earnings per share:
Basic	$ (0.19)	$ (0.08)
Diluted	$ (0.19)	$ (0.08)
Pro Forma [Member]
Business Acquisition [Line Items]
Net revenues	$ 183,527	$ 167,735
Net (loss) income attributable to common shareholders	$ (12,213)	$ (8,499)
Earnings per share:
Basic	$ (0.17)	$ (0.15)
Diluted	$ (0.17)	$ (0.15)
WAM Technologies, LLC [Member]
Business Acquisition [Line Items]
Net revenues	$ 5,234	$ 5,655
Net (loss) income attributable to common shareholders	$ 1,074	906
SkyWave Mobile Communications Inc. [Member]
Business Acquisition [Line Items]
Net revenues		65,838
Net (loss) income attributable to common shareholders		$ (4,684)