Income Taxes Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 19,795	$ 20,406	$ 19,302
Income Tax Reconciliation, State and Local Income Taxes	5,678	3,561	2,200
Income Tax Reconciliation, Permanent differences to return	446	540	408
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount	(2,615)	(392)	(1,327)
Income Tax Reconciliation, Tax Contingencies	(73)	289	(1,067)
Income Tax Reconciliation, Other Adjustments	224	(193)	(276)
Income Tax Expense (Benefit)	$ 23,455	$ 24,211	$ 19,240