XML 74 R64.htm IDEA: XBRL DOCUMENT v3.8.0.1
Other Investments (Narrative) (Details)
$ / shares in Units, shares in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 27, 2017
USD ($)
Apr. 14, 2017
USD ($)
Oct. 31, 2017
USD ($)
unit
Aug. 31, 2017
USD ($)
Apr. 30, 2017
USD ($)
property
Dec. 31, 2016
USD ($)
Mar. 31, 2018
USD ($)
plan
unit
Mar. 31, 2017
USD ($)
Mar. 31, 2018
USD ($)
unit
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Jan. 01, 2018
USD ($)
Schedule of Equity Method Investments [Line Items]                      
Payments to acquire equity method investments             $ 43,391,000 $ 1,813,000      
Carrying value of assets             4,450,059,000   $ 4,450,059,000 $ 4,731,078,000  
Net proceeds from sales of real estate             48,469,000 30,215,000      
Retained earnings (deficit)             (2,368,162,000)   (2,368,162,000) (2,470,564,000)  
Total debt obligations             3,190,333,000   3,190,333,000 3,539,991,000  
Total gross carrying value of loans             1,429,227,000   1,429,227,000 1,289,568,000  
Equity method investments, carrying value             $ 422,853,000   $ 422,853,000 321,241,000  
Net lease venture                      
Schedule of Equity Method Investments [Line Items]                      
iStar's ownership percentage             51.90%   51.90%    
Partners' capital account, contributions (up to)             $ 500,000,000   $ 500,000,000    
Equity method investment, related party ownership percentage             0.60%   0.60%    
Equity method investment, related party promote fee percentage             50.00%   50.00%    
Equity method investment, partner ownership percentage             47.50%   47.50%    
Total assets carrying value             $ 740,700,000   $ 740,700,000 658,300,000  
Net lease venture | Other income                      
Schedule of Equity Method Investments [Line Items]                      
Management fees revenue             600,000 500,000      
Safety, Income and Growth, Inc.                      
Schedule of Equity Method Investments [Line Items]                      
Management fees waived             900,000        
Reimbursement revenue waived             400,000        
Other real estate equity investments | Operating Properties                      
Schedule of Equity Method Investments [Line Items]                      
Payments to acquire equity method investments           $ 7,000,000          
Equity method investments, carrying value             55,900,000   55,900,000 38,800,000  
Loan commitments                   27,000,000  
Loans receivable, carrying value             26,000,000   26,000,000 25,400,000  
Interest income             500,000 400,000      
Other real estate equity investments | Land & Development                      
Schedule of Equity Method Investments [Line Items]                      
Equity method investments, carrying value             $ 71,000,000   $ 71,000,000 61,300,000  
Other real estate equity investments | Minimum                      
Schedule of Equity Method Investments [Line Items]                      
iStar's ownership percentage             20.00%   20.00%    
Other real estate equity investments | Maximum                      
Schedule of Equity Method Investments [Line Items]                      
iStar's ownership percentage             95.00%   95.00%    
Great Oaks                      
Schedule of Equity Method Investments [Line Items]                      
Lessor, operating lease, term of contract     99 years                
Number of units in real estate property to be built | unit     301                
Real estate, leasehold improvement allowance     $ 7,200,000                
Great Oaks | Safety, Income and Growth, Inc.                      
Schedule of Equity Method Investments [Line Items]                      
Forward purchase contract, purchase agreement, amount                   34,000,000  
Great Oaks | Leasehold First Mortgage                      
Schedule of Equity Method Investments [Line Items]                      
Total debt obligations     80,500,000                
Total gross carrying value of loans     $ 80,500,000                
Marina Palms                      
Schedule of Equity Method Investments [Line Items]                      
iStar's ownership percentage             47.50%   47.50%    
Total assets carrying value             $ 30,900,000   $ 30,900,000 $ 32,400,000  
Number of units | unit             468   468    
Marine Palms North Tower                      
Schedule of Equity Method Investments [Line Items]                      
Number of units | unit             234   234    
Number of units remaining for sale | unit             1   1    
Marine Palms South Tower                      
Schedule of Equity Method Investments [Line Items]                      
Number of units | unit             234   234    
Number of units remaining for sale | unit             30   30    
Newly formed unconsolidated entity                      
Schedule of Equity Method Investments [Line Items]                      
iStar's ownership percentage             50.00%   50.00%    
Safety, Income and Growth, Inc.                      
Schedule of Equity Method Investments [Line Items]                      
iStar's ownership percentage             39.90%   39.90%    
Contributions by majority shareholders   $ 57,500,000                  
Carrying value of assets   161,100,000                  
Gain from discontinued operations         $ 123,400,000            
Safety, Income and Growth, Inc. | Ground Lease                      
Schedule of Equity Method Investments [Line Items]                      
Commitment to provide loan to lessee       $ 24,000,000              
Loan term       1 year              
Amount of loan funded             $ 10,300,000   $ 10,300,000    
Safety, Income and Growth, Inc. | Private Placement                      
Schedule of Equity Method Investments [Line Items]                      
Proceeds from issuance initial public offering $ 205,000,000                    
Proceeds from issuance of private placement 45,000,000                    
Safety, Income and Growth, Inc. | IPO                      
Schedule of Equity Method Investments [Line Items]                      
Payments of stock issuance costs 18,900,000                    
Offering costs $ 25,000,000                    
Wholly-owned Subsidiary | Safety, Income and Growth, Inc.                      
Schedule of Equity Method Investments [Line Items]                      
Management fee, percent of equity below threshold             1.00%        
Management fee, shareholders' equity threshold amount             $ 2,500,000,000.0   $ 2,500,000,000.0    
Management fee, percent of equity above threshold             0.75%        
Ground Net Lease Business | Safety, Income and Growth, Inc.                      
Schedule of Equity Method Investments [Line Items]                      
Payments to acquire equity method investments   $ 55,500,000     55,500,000            
Noncontrolling interest (as a percent)   49.10%                  
Noncontrolling interest, ownership percentage by parent   50.90%                  
Net proceeds from sales of real estate   $ 113,000,000     $ 113,000,000            
Number of properties | property         12            
2017 Secured Financing                      
Schedule of Equity Method Investments [Line Items]                      
Debt instrument, face amount               $ 227,000,000.0      
10b5-1 Plan | Safety, Income and Growth, Inc.                      
Schedule of Equity Method Investments [Line Items]                      
Number of shares purchased | shares                 2,200    
Aggregate value of common stock purchased                 $ 41,700,000    
Average share price (in dollars per share) | $ / shares                 $ 18.67    
Common stock purchase plan, number of plans | plan             2        
Chief Executive Officer and Chief Financial Officer | 10b5-1 Plan | Safety, Income and Growth, Inc.                      
Schedule of Equity Method Investments [Line Items]                      
Number of shares purchased | shares                   26  
Aggregate value of common stock purchased                   $ 500,000  
Average share price (in dollars per share) | $ / shares                   $ 19.20  
Accounting Standards Update 2017-05                      
Schedule of Equity Method Investments [Line Items]                      
Carrying value of assets                     $ 4,806,947,000
Retained earnings (deficit)                     (2,394,695,000)
New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2017-05                      
Schedule of Equity Method Investments [Line Items]                      
Retained earnings (deficit)                     $ 55,500,000
New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2017-05 | Ground Net Lease Business                      
Schedule of Equity Method Investments [Line Items]                      
Gain on sale of business                   $ 178,900,000