Income Taxes (Textual) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax payments	$ 3,200	$ 10,900	$ 10,200
Income tax refunds	3,000	200	900
Cumulative unremitted earnings of foreign subsidiaries	9,200
Cumulative deferred tax liabilities of unremitted foreign earnings	342	296
Permanent items	1,200	3,900
Net (benefit) expense in interest and penalties related to uncertain tax positions	(700)	200	$ (900)
Interest and penalties accrued	$ 100	$ 700