Income Taxes (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Income Tax Disclosure [Abstract]
Liability for unrecognized tax benefits	$ 2,790
Unrecognized tax benefits, income tax penalties and interest accrued	536
Unrecognized tax benefits that would impact the effective tax rate	2,433
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations	$ 138
Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2014
Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2016