Segment Reporting - Reportable Revenues by Geographic Regions (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Net revenues	$ 10,735	$ 7,129	$ 17,297	$ 14,344
United States [Member]
Segment Reporting Information [Line Items]
Net revenues	8,098	7,129	14,631	14,344
Europe, Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Net revenues	2,404	0	2,418	0
Latin America and Canada [Member]
Segment Reporting Information [Line Items]
Net revenues	$ 233	$ 0	$ 248	$ 0