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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |
Total deferred tax assets | $ 22,821 | $ 16,367 |
Federal net operating losses | 14,885 | 9,962 |
Valuation allowance | $ 15,086 | $ 4,701 |
U.S. statutory rate | 21.00% | 21.00% | 35.00%
Domestic Tax Authority |  |  |
Income Tax Contingency [Line Items] |  |  |
Operating loss carryforwards | $ 70,900 |  |
Operating loss carryforwards subject to expire | $ 42,300 |  |
Operating loss carryforwards, limitations on use, description | remaining U.S. federal NOL carryforwards eligible to be carried forward indefinitely, subject to an 80% limitation on taxable income in each year. |  |
Operating loss carryforwards limitation rate on taxable income | 80.00% |  |
State and Local Jurisdiction |  |  |
Income Tax Contingency [Line Items] |  |  |
Operating loss carryforwards | $ 65,100 |  |

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