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Prepaid Expenses and Other Assets, Net (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Property, Plant and Equipment [Line Items] |  |  |  |
Lease incentives, net | $ 35,100 | $ 35,642 |  |
Construction contract costs in excess of billings, net | 13,046 | 10,343 |  |
Prepaid expenses | 10,873 | 19,690 |  |
Furniture, fixtures and equipment, net | 10,461 | 10,433 |  |
Net investment in sales-type leases | 6,507 | 6,573 |  |
Non-real estate equity investments | 5,530 | 5,509 |  |
Restricted cash | 4,141 | 3,664 | $ 3,826 | $ 3,397
Marketable securities in deferred compensation plan | 3,019 | 3,027 |  |
Deferred financing costs, net | 2,158 | 2,439 |  |
Deferred tax asset, net | 1,957 | 1,989 |  |
Other assets | 6,488 | 5,274 |  |
Total | 99,280 | 104,583 |  |
Taxable REIT Subsidiary |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Deferred tax assets, valuation allowance | $ (51) | $ (201) |  |

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