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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Taxes (Textual) [Abstract]
Effective tax rate (percent)	654.00%	34.00%	74.00%	40.00%
Undistributed earnings on a book basis for the non-U.S. subsidiaries	$ 13,900		$ 13,900
Unrecognized deferred tax liability related to undistributed earnings of non-U.S. subsidiaries	1,200		1,200
Total unrecognized tax benefits	1,600		1,600
Accrued interest and penalties	985		985		$ 951
Expected additional federal and state tax expense	$ 31,000		$ 31,000

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Accrued interest and penalties related to uncertain tax positions.

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Income taxes.

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Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of foreign subsidiaries.

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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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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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Amount of unrecognized tax benefits.

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