Income Taxes (Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current federal	$ 12,172	$ 7,594	$ 38,859
Current state	6,087	5,538	4,112
Total current provision	18,259	13,132	42,971
Deferred federal	46,290	41,078	48,653
Deferred state	810	4,136	1,178
Total deferred provision	47,100	45,214	49,831
Total included in net income	$ 65,359	$ 58,346	$ 92,802