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Real Estate - Net Lease Venture (Details) - USD ($) $ in Thousands		12 Months Ended
	Jun. 30, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Gain on consolidation of equity method investment	$ 67,900	$ 0	$ 0	$ 67,877
Equity method investment, partner ownership percentage		47.50%
Net Lease | iStar Net Lease I LLC
Schedule of Equity Method Investments [Line Items]
Equity interest		51.90%
Equity method investment, related party ownership percentage		0.60%
Equity method investment, related party promote fee percentage		50.00%

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Equity Method Investment, Partner Ownership Percentage

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The gain (loss) recognized on initial consolidation of a variable interest entity (VIE) when the VIE is not a business (as defined).

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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