Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Income Taxes. | ||
| Federal income tax rate | 34.00% | |
| Effective Income Tax Rate Reconciliation, Amount [Abstract] | ||
| Computed expected tax benefit | $ (1,748) | $ (1,485) |
| State tax benefit, net of federal benefit | (107) | (141) |
| Non-taxable income charge | (381) | 231 |
| Nondeductible expenses, principally goodwill & impairment | 827 | 14 |
| Change in valuation allowance | (8,844) | 1,861 |
| Change in federal rate | 9,485 | |
| Foreign income tax | 58 | 125 |
| Total income tax expense | $ 52 | $ 143 |