Other Current Assets - Schedule of Other Current Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Advances to vendors	$ 5,714	$ 5,403
Prepaid expenses	2,060	750
Other receivables	375	536
Total	$ 8,149	$ 6,689