Federal Income Taxes: Reconciliation From Tax At the Statutory Rate to the Income Tax Provision (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Income Tax Disclosure [Abstract] | |||
| Income tax expense at statutory rate | $ 4,917 | $ 5,790 | $ 3,823 |
| Tax exempt interest, net | (38) | (8) | (21) |
| Change in valuation allowance | (112) | 19 | (17,329) |
| Benefit of lower federal tax bracket | (39) | 0 | 0 |
| Other, net | 159 | 55 | (16) |
| Total income tax expense (benefit) | $ 4,887 | $ 5,856 | $ (13,543) |