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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Income Tax Disclosure [Abstract] |  |
Deferred tax assets, Employee benefits and deferred compensation | $ 1,035 | $ 1,089
Deferred tax assets, Investments and asset impairments | 1,818 | 1,772
Deferred tax assets, Other temporary differences | (674) | (686)
Deferred tax assets Net operating loss and capital loss carryforwards | 16,136 | 15,643
Deferred Tax Assets, Gross | 18,315 | 17,818
Valuation allowance | (18,315) | (17,818)
Net deferred tax assets |  |

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