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Income Taxes (Components of Net Income Tax Asset) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Deferred tax assets: |  |
Capital loss carryforward | $ 830 | $ 880
Net operating loss carryforward | 5,088 | 4,983
Gross deferred tax assets | 5,918 | 5,863
Valuation allowance | (5,743) | (5,666)
Total deferred tax assets | 175 | 197
Deferred tax liabilities: |  |
Built-in gain | (175) | (197)
Total deferred tax liabilities | (175) | (197)
Net deferred tax asset | $ 0 | $ 0

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