Related Party Transactions (Narrative) (Details) $ / shares in Units, $ in Thousands, ft² in Millions | | 1 Months Ended | 3 Months Ended | 6 Months Ended | 16 Months Ended |
Dec. 01, 2021 shares | Jun. 30, 2022 USD ($) employee lease director $ / shares | Apr. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) director lease property | Feb. 28, 2022 USD ($) director shares | Jan. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Nov. 30, 2021 USD ($) director | Sep. 30, 2021 USD ($) | Aug. 31, 2021 director shares | Jun. 30, 2021 USD ($) ft² director agreement | Mar. 31, 2021 USD ($) director | Feb. 28, 2021 USD ($) | Jun. 30, 2022 USD ($) employee lease $ / shares | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) employee lease $ / shares | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) employee lease $ / shares |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of employees | employee | | | 0 | | | | | | | | | | | | 0 | | 0 | | 0 |
Management fee paid with common stock, period of restriction from selling stock | | | | | | | | | | | | | | | | | 2 years | | |
Management fee, percent, threshold one | | | | | | | | | | | | | | | | | 1% | | |
Management fee, percent, threshold two | | | | | | | | | | | | | | | | | 1.25% | | |
Management fee, percent, threshold three | | | | | | | | | | | | | | | | | 1.375% | | |
Management fee, percent, threshold four | | | | | | | | | | | | | | | | | 1.50% | | |
Management fee expense | | | | | | | | | | | | | | | | | $ 9,666 | $ 6,996 | |
Termination fee, percent of prior years management fee | | | 300% | | | | | | | | | | | | 300% | | 300% | | 300% |
Ground lease acquisition | | | | | | | | | | | | | | | | | $ 430,517 | 95,985 | |
Long-term debt, gross | | | $ 3,318,113 | | | | | $ 2,738,113 | | | | | | | $ 3,318,113 | | 3,318,113 | | $ 3,318,113 |
Future funding obligation, amount | | | 436,700 | | | | | | | | | | | | 436,700 | | 436,700 | | 436,700 |
Leasehold improvement allowance, unfunded, pending milestone achievement | | | 316,500 | | | | | | | | | | | | 316,500 | | 316,500 | | 316,500 |
Assets | [1] | | $ 5,542,533 | | | | | 4,515,726 | | | | | | | $ 5,542,533 | | $ 5,542,533 | | $ 5,542,533 |
Number of new Ground Leases entered into | lease | | | | | 3 | | | | | | | | | | | | | | |
Number of ground leases | lease | | | 29 | | | | | | | | | | | | 29 | | 29 | | 29 |
Number of directors with affiliated trusts which hold CARET Units | director | | | | | | | | | | | 2 | | | | | | | | |
Number of common shares issued in exchange for Caret Units | shares | | 2,546 | | | | | | | | | 2,546 | | | | | | | | |
General and Administrative Expense | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Management fee expense | | | | | | | | | | | | | | | $ 5,200 | $ 3,500 | $ 9,700 | 7,000 | |
Land | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Payments to acquire land | | | | | $ 28,500 | | | 56,500 | | | | | | | | | | | |
iStar Inc. | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of years as active real estate investor | | | | | | | | | | | | | | | | | 20 years | | |
iStar Inc. | General and Administrative Expense | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Expenses from transactions with related party | | | | | | | | | | | | | | | 3,100 | 1,900 | $ 6,200 | 3,800 | |
Manager | General and Administrative Expense | Incentive Fee | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Expenses from transactions with related party | | | | | | | | | | | | | | | | | 0 | | |
Office space development property | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of square feet | ft² | | | | | | | | | | | | 1.1 | | | | | | | |
Purchase price of property under purchase option agreement | | | | | | | | | | | | $ 215,000 | | | | 215,000 | | 215,000 | |
Mixed-use property | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Ground lease, additional construction, funding commitment | | | $ 35,000 | | | | | | | | | | | | | | | | |
Minimum | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Management fee, shareholders' equity, incremental threshold amount two | | | 1,500,000 | | | | | | | | | | | | 1,500,000 | | 1,500,000 | | $ 1,500,000 |
Management fee, shareholders' equity, incremental threshold amount three | | | 3,000,000 | | | | | | | | | | | | 3,000,000 | | 3,000,000 | | 3,000,000 |
Management fee, shareholders' equity, incremental threshold amount four | | | 5,000,000 | | | | | | | | | | | | 5,000,000 | | $ 5,000,000 | | 5,000,000 |
Ground leases term | | | | | | | | | | | | | | | | | 30 years | | |
Maximum | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Management fee, shareholders' equity, incremental threshold amount one | | | 1,500,000 | | | | | | | | | | | | 1,500,000 | | $ 1,500,000 | | 1,500,000 |
Management fee, shareholders' equity, incremental threshold amount two | | | 3,000,000 | | | | | | | | | | | | 3,000,000 | | 3,000,000 | | 3,000,000 |
Management fee, shareholders' equity, incremental threshold amount three | | | $ 5,000,000 | | | | | | | | | | | | $ 5,000,000 | | $ 5,000,000 | | $ 5,000,000 |
Ground leases term | | | | | | | | | | | | | | | | | 99 years | | |
IPO | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Share price (in dollars per share) | $ / shares | | | $ 20 | | | | | | | | | | | | $ 20 | | $ 20 | | $ 20 |
Caret Units | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of units sold | shares | | | | | | 108,571 | | | | | | | | | | | | | |
Percentage of authorized shares sold | | | | | | 1.08% | | | | | | | | | | | | | |
Number of additional shares to be sold under binding purchase commitment | shares | | | | | | 28,571 | | | | | | | | | | | | | |
Percentage of authorized shares under commitment to be purchased | | | | | | 0.29% | | | | | | | | | | | | | |
Expected proceeds from sale of shares under purchase commitment | | | | | | $ 5,000 | | | | | | | | | | | | | |
Number of independent directors affiliated with an existing shareholder investing in redeemable noncontrolling interest | director | | | | | | 1 | | | | | | | | | | | | | |
Proceeds from stock transaction | | | | | | $ 19,000 | | | | | | | | | | | | | |
Period in which the entity is obligated to provide a public market listing | | | | | | 2 years | | | | | | | | | | | | | |
Multi-family Project Under Construction | iStar Inc. | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Ground lease, additional construction, funding commitment | | | | | | | | | | | | | $ 75,000 | | | | | | |
Multi-family Project Under Construction | iStar Inc. | Land | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Future funding obligation, amount | | | | | | | | | | | | | 11,900 | | | | | | |
Leasehold improvement allowance, unfunded, pending milestone achievement | | | | | | | | | | | | | 52,000 | | | | | | |
Payment of deferred purchase price obligation | | | | | | | | | | | | | | | | | | | $ 6,000 |
Multi-family Project Under Construction | iStar Inc. | Land | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Payments to acquire productive assets | | | | | | | | | | | | | $ 16,100 | | | | | | |
Number of independent directors affiliated with an existing shareholder participating in or related to a particular project or transaction | director | | | | | | | | | | | | | 1 | | | | | | |
iStar Inc. | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Ground lease acquisition | | | | $ 9,000 | | | | | | | | | | | | | | | |
Payment to acquire purchase option agreement | | | | | | | | | | | | $ 1,200 | | | | | | | |
Payments to acquire land | | | | | $ 122,000 | | | | | | | | | | | | | | |
Number of land properties acquired | property | | | | | 3 | | | | | | | | | | | | | | |
Payment to terminate a real estate purchase option | | | | | $ 300 | | | | | | | | | | | | | | |
iStar Inc. | Land and Related Ground Lease | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of agreements entered into to acquire land and related ground lease | agreement | | | | | | | | | | | | 2 | | | | | | | |
Purchase price per agreement for acquisition of land and related Ground Lease, subject to certain conditions being met | | | | | | | | | $ 33,300 | | | $ 42,000 | | | | $ 42,000 | | $ 42,000 | |
Multiple required by seller that may trigger payment of additional consideration | | | | | | | 1.05 | | 1.25 | | | 1.25 | | | | 1.25 | | 1.25 | |
Percentage of required seller return on investment that may trigger payment of additional consideration | | | | | | | 10% | | 12% | | | 9% | | | | | | | |
Future funding obligation, amount | | | | | | | | | $ 51,800 | | | | | | | | | | |
Number of independent directors affiliated with an existing shareholder participating in or related to a particular project or transaction | director | | | | | | | | | 1 | | | 1 | | | | | | | |
iStar Inc. | Maximum | Land and Related Ground Lease | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Real estate, leasehold improvement allowance | | | | | | | | | | | | $ 83,000 | | | | $ 83,000 | | $ 83,000 | |
Purchase price per agreement for acquisition of land and related Ground Lease, subject to certain conditions being met | | | | | | | $ 36,000 | | | | | | | | | | | | |
iStar Inc. | Multi-family Project Under Construction | Land | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Pending ownership interests acquired, subject to conditions being met | | | | | | | | | | | | | 100% | | | | | | |
iStar Inc. | Multi-family Project Under Construction | Multi-family | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Payments to acquire productive assets | | | | | | | | | | $ 24,800 | | | | | | | | | |
Director | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of directors with indirect ownership in Ground lease tenant. | director | | | | | 1 | | | | | | | | | | | | | | |
iStar Affiliate | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of independent directors affiliated with an existing shareholder participating in or related to a particular project or transaction | director | | | | | | 1 | | | | | | | | | | | | | |
iStar Affiliate | Life Science Office Property Development | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Additional consideration paid | | | | | | $ 9,000 | | | | | | | | | | | | | |
iStar Affiliate | Life Science Office Property Development | Ground Lease tenant | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Loan commitment received to fund a recapitalization project | | | | | | $ 130,000 | | | | | | | | | | | | | |
iStar Affiliate | Mixed-use property | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Additional consideration paid | | | $ 5,000 | | | | | | | | | | | | | | | | |
iStar Affiliate | Mixed-use property | Venture in which iStar and an affiliate of an existing shareholder own noncontrolling interest | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Loan commitment received to fund a recapitalization project | | | $ 105,000 | | | | | | | | | | | | $ 105,000 | | $ 105,000 | | 105,000 |
iStar Shareholder Affiliate | Mixed-use property | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of directors affiliated with shareholder having indirect ownership in venture | director | | | 1 | | | | | | | | | | | | | | | | |
Secured Debt | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Long-term debt, gross | | | $ 1,498,113 | | | | | $ 1,498,113 | | | | | | | $ 1,498,113 | | $ 1,498,113 | | $ 1,498,113 |
iStar Inc. | Ground Lease Tenant for Recapitalization of an Existing Hotel Property | Hotel | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Expenses from transactions with related party | | | | | | | | | | | | | | $ 1,900 | | | | | |
Ground lease, additional construction, funding commitment | | | | | | | | | | | | | | $ 50,000 | | | | | |
Caret Units | | | | | | | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | | | | | | | |
Number of CARET Units exchanged for common shares | shares | | 3,750 | | | | | | | | | 3,750 | | | | | | | | |
| |
[1] Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”). | |