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Income Taxes - Narrative (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Operating Loss Carryforwards [Line Items] |  |
Deferred tax assets, operating loss carryforwards, portion available after application of IRC Section 382 limitations | $ 54.5 |
Operating loss carry-forwards | 8.3 | $ 8.7
Operating loss, subject to expiration | 37.3 |
U.S. Federal, State and Local tax authorities |  |
Operating Loss Carryforwards [Line Items] |  |
Deferred tax assets, operating loss carry-forwards | 108.8 |
State and Local Jurisdiction |  |
Operating Loss Carryforwards [Line Items] |  |
Deferred tax assets, operating loss carry-forwards | $ 64.5 |

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