Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Valuation allowance	$ 1,090	$ 1,090
Deferred tax assets, gross	175,400	120,600
Unrecognized tax benefits	$ 4,300	4,300
Effective income tax rate on unrecognized tax benefits that would impact effective tax rate	0.30%
Accrued interest related to unrecognized tax benefits	$ 64	70
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Operating Loss Carryforwards	1,500	1,700
Valuation allowance	1,100	1,100
Tax Year 2019 [Member]
Income Tax Contingency [Line Items]
Changes for tax positions of prior years	516
Tax Adjustments, Settlements, and Unusual Provisions	$ 183
Tax Year 2018 [Member]
Income Tax Contingency [Line Items]
Changes for tax positions of prior years		$ 1,700