Income Taxes Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 19,302	$ 22,574	$ 30,117
Income Tax Reconciliation, State and Local Income Taxes	2,200	178	1,135
Income Tax Reconciliation, Permanent differences to return	408	309	(23)
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount	(1,327)	(325)	(362)
Income Tax Reconciliation, Tax Contingencies	(1,067)	(1,208)	(1,473)
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred TaxLiability, Provisional Income Tax (Expense) Benefit	0	(32,789)	0
Income Tax Reconciliation, Other Adjustments	(276)	586	269
Income Tax Expense (Benefit)	$ 19,240	$ (10,675)	$ 29,663