Accrued Compensation (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Components of Accrued Compensation
Accrued social insurance	[1]	$ 19,974	$ 18,923
Accrued salary/wages		7,903	7,549
Accrued vacation/holiday		2,411	2,227
Accrued bonus	[2]	2,421	5,914
Accrued commission		933	1,084
Accrued medical insurance claims		122	218
Other accrued compensation		1,816	1,537
Total accrued compensation		35,580	37,452
Accrued salaries - 13th month salaries		$ 700	$ 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 December 31, 2016 and 2015.

[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 $0.7 million and $0.7 million at December 31, 2016 and 2015, respectively.