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Other Investments (LNR Property Narrative) (Details) (LNR Property LLC (LNR), USD $) | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Apr. 30, 2013 | Jul. 31, 2010 | Mar. 31, 2013 | Mar. 31, 2014 | Dec. 31, 2012 | Jul. 28, 2010
LNR Property LLC (LNR) |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
iStar's ownership percentage |  |  |  |  | 24.00% | [1] | 24.00%
Net sales proceeds | $ 220,300,000 |  |  |  |  |  |
Percentage of ownership acquired by the Company and a group of investors |  |  |  |  |  |  | 100.00%
Contribution towards principal amount of Holdco Notes |  | 100,000,000 |  |  |  |  |
Amount of cash contributed in exchange for equity interest |  | 100,000,000 |  |  |  |  |
Equity interest in investee |  |  |  |  |  |  | 120,000,000
Real estate, net proceeds held in escrow for potential indemnification obligations |  |  |  | 25,200,000 |  |  |
Equity Method Ownership Rollforward [Roll Forward] |  |  |  |  |  |  |
Equity Method Investment, Amount, Quarter Lag | 220,281,000 |  | 205,773,000 |  |  |  |
Income (Loss) from Equity Method Investments, Before Other than Temporary Impairment |  |  | 45,375,000 |  |  |  |
Equity Method Investment, Carrying Value Before OTTI |  |  | 251,148,000 |  |  |  |
Other than temporary impairment |  |  | (30,867,000) |  |  |  |
Equity Method Investment, Amount, Quarter Lag |  |  | 220,281,000 |  |  |  |
Income (loss) from equity method investments, net of OTTI |  |  | $ 14,746,000 |  |  |  |
[1] | The Company recorded its investment in LNR, which was sold in April 2013, on a one quarter lag. Therefore, the amounts in the Company's financial statements for the three months ended March 31, 2013 were based on balances and results from LNR for the three months ended December 31, 2012.

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