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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 1,784	$ 2,185	$ 2,535	$ 3,439
Effective tax rate	21.30%	20.70%	21.30%	20.20%
Unrecognized tax benefits	$ 3,700		$ 3,700
Unrecognized tax benefits that would impact effective rate	2,000		2,000
Decrease in unrecognized tax benefits is reasonably possible in next 12 months	100		100
Accrued interest and penalties	$ 200		$ 200		$ 200
State Administration of Taxation, China [Member]
Income Taxes [Line Items]
Income tax credit and adjustment				$ 500

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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