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Income Taxes - Continuing Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Current taxes: |  |
Domestic | $ 2,558 | $ (7,369)
Current income tax (benefit) expense | 2,558 | (7,369)
Deferred taxes: |  |
Domestic | (6,897) | (9,167)
Deferred income tax (benefit) expense | (6,897) | (9,167)
Income tax benefit | (4,339) | (16,536)
Loss before income taxes |  |
Domestic | (18,383) | (36,985)
Foreign | (755) | (2,636)
Loss before income taxes | $ 19,138 | $ 39,621
Effective income tax rate (as a percent) | 22.70% | 41.70%
Impact of tax benefit of disposal | $ 3,332 |

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