Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Currently Payable:
Federal	$ (5,723)	$ (969)	$ 1,965	$ (541)
Deferred:
Federal	12,149	6,812	18,899	16,644
State	131	137	383	382
Total Income Tax Expense	6,557	5,980	21,247	16,485
Reconciliation of Federal Statutory to Actual Tax Expense:
Federal statutory income tax at 35%	8,268	7,736	25,359	21,486
Tax-exempt interest income	$ (1,949)	(1,310)	(5,116)	(3,805)
Basis difference on sale of insurance subsidiary			2,252
Stock compensation	$ 8	8	26	29
Earnings on life insurance	(249)	(534)	(734)	(1,024)
Tax credits	(145)	(158)	(437)	(753)
Other	624	238	(103)	552
Total Income Tax Expense	$ 6,557	$ 5,980	$ 21,247	$ 16,485
Federal statutory income tax rate	35.00%	35.00%	35.00%	35.00%