Accrued Compensation (Details) (USD $)	Jun. 30, 2013		Dec. 31, 2012
Employee-related Liabilities, Current [Abstract]
Accrued social insurance	$ 20,135,000	[1]	$ 19,842,000	[1]
Accrued salary/wages	5,393,000		4,862,000
Accrued vacation/holiday	2,202,000		2,048,000
Accrued bonus	3,076,000	[2]	4,181,000	[2]
Accrued commission	470,000		478,000
Accrued medical insurance claims	669,000		643,000
Other accrued compensation	1,060,000		1,344,000
Total accrued compensation	33,005,000		33,398,000
Accrued Salaries - 13th Month Salaries	$ 400,000		$ 500,000

[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, 2013 and December 31, 2012.

[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 $0.4 million and $0.5 million at June 30, 2013 and December 31, 2012, respectively.