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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |  |
Tax Cuts and Jobs Act of 2017, decrease to deferred income tax provisions |  |  |  | $ 4,200
Tax Cuts and Jobs Act of 2017, transition tax obligation |  |  |  | 17,800
Tax Cuts and Jobs Act of 2017, increase in taxable income |  |  |  | 1,500
Franchise tax expense |  | $ 300 | $ 300 | $ 200
Frenchman's Reef & Morning Star Beach Resort |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
New adjusted tax rate after the reduction (as a percent) |  | 4.40% |  |
State |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards |  | $ 2,572 | 2,975 |
Valuation allowance |  | $ 700 | $ 700 |
Scenario, Forecast | Frenchman's Reef & Morning Star Beach Resort |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
New adjusted tax rate after the reduction (as a percent) | 2.30% |  |  |

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