Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Income Tax Uncertainties [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 3,900	$ 4,000
Unrecognized Tax Benefits, Period Increase (Decrease)	(100)	400
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	900	900
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	100	0	$ (1,400)
Decrease in Unrecognized Tax Benefits is Reasonably Possible	0
Increase in Unrecognized Tax Benefits is Reasonably Possible	1,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance beginning of period	5,010	4,585
Additions based on tax positions related to current year	767	1,138
Additions for tax positions of prior years	0	124
Reductions for tax positions of prior years	(216)	0
Reductions due to lapse of applicable statute of limitations	(428)	(701)
Settlements	(196)	(136)
Balance end of period	4,937	5,010	$ 4,585
Valuation Allowance [Abstract]
Valuation Allowance, Amount	$ 0	$ 0