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Real Estate (Schedule of Real Estate Assets) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Real Estate Properties [Line Items] |  |  |
Less: accumulated depreciation | [1] | $ (290,167) | $ (267,772)
Real estate, net | [1] | 1,367,006 | 1,484,281
Real estate available and held for sale | [1] | 99,201 | 5,212
Total real estate | [1] | 1,466,207 | 1,489,493
Net Lease |  |  |
Real Estate Properties [Line Items] |  |  |
Land, at cost |  | 188,418 | 188,418
Buildings and improvements, at cost |  | 1,355,014 | 1,353,683
Less: accumulated depreciation |  | (270,401) | (250,198)
Real estate, net |  | 1,273,031 | 1,291,903
Real estate available and held for sale |  | 0 | 0
Total real estate |  | 1,273,031 | 1,291,903
Net Lease | iStar Net Lease I LLC |  |  |
Real Estate Properties [Line Items] |  |  |
Real estate, net |  | 746,100 | 755,500
Operating Properties |  |  |
Real Estate Properties [Line Items] |  |  |
Land, at cost |  | 6,830 | 103,530
Buildings and improvements, at cost |  | 106,911 | 106,422
Less: accumulated depreciation |  | (19,766) | (17,574)
Real estate, net |  | 93,975 | 192,378
Real estate available and held for sale |  | 99,201 | 5,212
Total real estate |  | 193,176 | 197,590
Real Estate Properties |  |  |
Real Estate Properties [Line Items] |  |  |
Land, at cost |  | 195,248 | 291,948
Buildings and improvements, at cost |  | 1,461,925 | 1,460,105
Less: accumulated depreciation |  | (290,167) | (267,772)
Real estate, net |  | 1,367,006 | 1,484,281
Real estate available and held for sale |  | 99,201 | 5,212
Total real estate |  | 1,466,207 | 1,489,493
Residential Operating Properties |  |  |
Real Estate Properties [Line Items] |  |  |
Real estate available and held for sale |  | $ 2,400 | $ 5,200
[1] | Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”).

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- Definition Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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