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Income Taxes - Components of Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Current Income Tax Expense (Benefit) [Abstract] |  |  |
Current Federal | $ 781 | $ 130 | $ 1,244
Current State | 543 | 71 | 601
Current Total | 1,324 | 201 | 1,845
Deferred Income Tax Expense (Benefit) [Abstract] |  |  |
Deferred Federal | 0 | 0 | 0
Deferred State | 0 | 0 | 0
Deferred Total | 0 | 0 | 0
Total federal income tax expense (benefit), continuing operations | 781 | 130 | 1,244
Total state and local income tax expense (benefit), continuing operations | 543 | 71 | 601
Total income tax provision from continuing operations | 1,324 | 201 | 1,845
Federal income tax expense (benefit), discontinued operations | (3) | (1) | (1,114)
State and local income tax expense (benefit), discontinued operations | (5) | 268 | 2,058
Total income tax provision from discontinued operations | $ (8) | $ 267 | $ 944

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