Accounting Policies - VIEs, Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Revenue	$ 77,361	$ 84,968	$ 85,908
Gross profit	11,325	14,306	12,998
Net income	$ 321	$ 2,413	$ 1,892