Income Taxes Reconciliation of Expected Federal Tax Expense to Actual (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Expected Tax Expense									$ (912)	$ (973)	$ 2,426
Effective Income Tax Rate Reconciliation, at Federal Statutory Rate, Percent									35.00%	35.00%	35.00%
Release of Tax Valuation Allowance in Other Comprehensive Income									$ (42)	$ (21)	$ (20)
Effective Income Tax Rate Reconciliation, Release of Valuation Allowance Previously in Other Comprehensive Income, Percent									1.61105%	0.7554%	(0.28856%)
Taxable Intercompany Stock Sales									$ 0	$ 0	$ 143
Effective Income Tax Rate Reconciliation, Taxable Intercompany Stock Sales, Percent									0.00%	0.00%	2.06319%
Tax Exempt Interest and Dividends-Received Deductions									$ (746)	$ (862)	$ (397)
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent									28.61527%	31.00719%	(5.72789%)
Adjustment of Prior Year Income Taxes									$ (317)	$ 1	$ 60
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent									12.20%	0.00%	0.90%
Tax Effect of Graduated Income Tax Rates									$ (71)	$ (89)	$ (100)
Effective Income Tax Rate Reconciliation, Effect of Graduate Rates, Percent									2.70%	3.20%	(1.40%)
Unrecognized Tax Benefits, Income Tax Penalties Expense									$ 1,890	$ 2,136	$ 0
Effective Income Tax Rate Reconciliation, Tax Contingency, Domestic, Percent									(72.49712%)	(76.83453%)	0.00%
Tax Benefit not Recognized due to Non-Deductibility of Tax Compliance Issue									$ 1,152	$ 3,514	$ 0
Effective Income Tax Rate Reconciliation, Nondeductible Costs to Remediate Tax Compliance Issue, Percent									(44.18872%)	(126.40288%)	0.00%
Other Reconciling Items									$ 18	$ 19	$ 26
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent									(0.69045%)	(0.78345%)	0.17513%
Federal income tax expense	$ 213	$ (242)	$ 1,076	$ (75)	$ 1,921	$ 952	$ 358	$ 494	$ 972	$ 3,725	$ 2,138
Effective Income Tax Rate Reconciliation, Percent									(37.30%)	(134.00%)	30.80%