Other Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Prepaid expenses and other current assets
Valued-added tax recoverable	$ 1,099	$ 1,077
Prepaid expenses	2,846	3,225
Advance to suppliers and other current assets	518	116
Income tax receivable	3,526	0
Total	$ 7,989	$ 4,418