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Income Taxes - Additional Information (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards, subject to expiration | $ 7,400,000 |
Net operating loss carryforwards, not subject to expiration | 20,600,000 |
Liability for uncertain tax positions | 0 | $ 0
Accrued interest and penalties related to uncertain tax positions | 0 | $ 0
Unremitted earnings of foreign subsidiaries | 4,700,000 |
Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards | 28,000,000.0 |
State |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards | 14,100,000 |
Foreign Tax Authority | Cyprus |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards | 28,800,000 |
Foreign Tax Authority | Poland |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards | $ 1,000,000.0 |

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