Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Effective Income Tax Rate, Percent	25.20%	25.90%	24.50%	18.40%
Valuation Allowance [Abstract]
Valuation Allowance, Amount	$ 0		$ 0		$ 0
Income Tax Uncertainties [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	3,800		3,800		3,600
Unrecognized Tax Benefits, Period Increase (Decrease)	(100)	$ 300	300	$ (1,600)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	900		900		$ 1,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	100	$ 100	(100)	$ (1,400)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance beginning of period			4,585
Additions based on tax positions related to current year			1,212
Additions for tax positions of prior years			124
Reductions for tax positions of prior years			(140)
Reductions due to lapse of applicable statute of limitations			(867)
Settlements			(76)
Balance end of period	4,838		4,838
Maximum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	1,200		1,200
Minimum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	$ 200		$ 200