Income Taxes Income Tax Expense Detail (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Current Federal Tax Expense (Benefit)	$ 11,985	$ 17,997	$ 34,664
Current State and Local Tax Expense (Benefit)	4,498	(1,495)	454
Current Income Tax Expense (Benefit)	16,483	16,502	35,118
Deferred Federal Income Tax Expense (Benefit)	5,537	(28,020)	(5,291)
Deferred State and Local Income Tax Expense (Benefit)	(2,780)	843	(164)
Deferred Income Tax Expense (Benefit)	2,757	(27,177)	(5,455)
Income Tax Expense (Benefit)	$ 19,240	$ (10,675)	$ 29,663