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Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2014
--- | --- | --- | --- | ---
Income Taxes [Line Items] |  |  |  |
Net operating loss carry forwards | $ 17,623 | $ 18,535 |  |
Stock based compensation | 1,007 | 921 |  |
Equity method investments | (478) | (497) |  |
Other | 152 | (72) |  |
Gross deferred tax assets | 17,499 | 18,011 |  |
Less: valuation allowance | (13,097) | (17,639) | $ (28,933) |
Deferred tax assets, net of valuation allowance | 4,402 |  |  | $ 0
Deferred tax assets, net of valuation allowance |  | 372 |  |
Trade Names And Customer Relationships [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Trade names and customer relationships | $ (805) | $ (876) |  |

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