Other Current Assets - Schedule of Other Current Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Advances to vendors	$ 5,007	$ 5,403
Prepaid expenses	1,075	750
Other receivables	929	536
Total	$ 7,011	$ 6,689