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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Jan. 01, 2019
Provision for income tax | $ 187,000 | $ 246,000 | $ 240,000 | $ 484,000 |
Remaining AMT refunds | 1,600,000 |  | 1,600,000 |  |
Rent payment deferrals | 4,500,000 |  |  |  |
Decrease in rental revenues | $ 4,100,000 |  |  |  |
Right-of-use assets |  |  |  |  | $ 434,200,000
Lease liabilities |  |  |  |  | $ 278,300,000
Federal [Member] |  |  |  |  |
Provision for income tax |  |  | $ 0 |  |

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