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Real Estate - Schedule of Real Estate Assets (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Real Estate Properties [Line Items] |  |
Land, at cost | $ 294,605 | $ 305,897
Buildings and improvements, at cost | 1,450,008 | 1,455,182
Less: accumulated depreciation | (257,518) | (233,860)
Real estate, net | 1,487,095 | 1,527,219
Real estate available and held for sale | 5,519 | 8,650
Total real estate | 1,492,614 | 1,535,869
Net Lease |  |
Real Estate Properties [Line Items] |  |
Land, at cost | 188,418 | 199,710
Buildings and improvements, at cost | 1,340,832 | 1,347,321
Less: accumulated depreciation | (240,319) | (219,949)
Real estate, net | 1,288,931 | 1,327,082
Real estate available and held for sale | 0 | 0
Total real estate | $ 1,288,931 | 1,327,082
Net Lease | Revenue Benchmark | Customer Concentration Risk |  |
Real Estate Properties [Line Items] |  |
Percentage of revenues attributable to largest net lease tenant | 11.90% |
Net Lease | Net Lease Venture |  |
Real Estate Properties [Line Items] |  |
Real estate, net | $ 760,400 | 768,600
Operating Properties |  |
Real Estate Properties [Line Items] |  |
Land, at cost | 106,187 | 106,187
Buildings and improvements, at cost | 109,176 | 107,861
Less: accumulated depreciation | (17,199) | (13,911)
Real estate, net | 198,164 | 200,137
Real estate available and held for sale | 5,519 | 8,650
Total real estate | 203,683 | 208,787
Residential Condominiums |  |
Real Estate Properties [Line Items] |  |
Real estate available and held for sale | $ 5,500 | $ 8,600

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