Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Currently Payable:
Federal	$ 7,658	$ 1,947	$ 7,688	$ 428
Deferred:
Federal	1,081	3,806	6,750	9,832
State	117	135	252	245
Total Income Tax Expense	8,856	5,888	14,690	10,505
Reconciliation of Federal Statutory to Actual Tax Expense:
Federal statutory income tax at 35%	9,389	7,367	17,091	13,750
Tax-exempt interest income	(1,738)	(1,270)	(3,167)	(2,495)
Basis difference on sale of insurance subsidiary	2,252		2,252
Stock compensation	10	8	18	21
Earnings on life insurance	(223)	(228)	(485)	(490)
Tax credits	(148)	(297)	(292)	(595)
Other	(686)	308	(727)	314
Total Income Tax Expense	$ 8,856	$ 5,888	$ 14,690	$ 10,505
Federal statutory income tax rate	35.00%	35.00%	35.00%	35.00%