Accrued Compensation (Details) - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Components of Accrued Compensation
Accrued social insurance	[1]	$ 17,188	$ 19,974
Accrued salary/wages		8,656	7,903
Accrued vacation/holiday		2,778	2,411
Accrued bonus	[2]	1,782	2,421
Accrued commission		682	933
Accrued medical insurance claims		286	122
Other accrued compensation		2,148	1,816
Total accrued compensation		33,520	35,580
Accrued salaries - 13th month salaries		$ 600	$ 700

[1] Effective January 1, 2008, the Chinese Labor Contract Law was enacted in the PRC. This law mandated that PRC employers remit the applicable social insurance payments to their local government. Social insurance is comprised of various components such as pension, medical insurance, job injury insurance, unemployment insurance, and a housing assistance fund, and is administered in a manner similar to social security in the United States. This amount represents our estimate of the amounts due to the PRC government for social insurance on June 30, 2017 and December 31, 2016.

[2] Accrued bonus includes an accrual for an extra month of salary ("13th month salary") to be paid to employees in certain geographies where it is the customary business practice. This 13th month salary is paid to these employees if they remain employed with us through December 31st. The total accrued for the 13th month salary was $0.6 million and $0.7 million at June 30, 2017 and December 31, 2016, respectively.