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SCHEDULE IV - LOANS AND OTHER LENDING INVESTMENTS (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 5.98% | 7.02% |  |
Prior Liens | $ 1,352,892 |  |  |
Secured amount of loan | 4,279,611 |  |  |
Carrying Amount | 4,189,960 | $ 3,200,145 | $ 2,579,127 | $ 1,695,732
Amount of loans extended | 808,100 |  |  |
Federal income tax basis | $ 4,290,000 |  |  |
Threshold for reporting loans (as a percent) | 3.00% |  |  |
Bridge loans |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 5.77% | 6.84% |  |
Prior Liens | $ 60,000 |  |  |
Secured amount of loan | 3,836,832 |  |  |
Carrying Amount | 3,750,710 |  |  |
Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Prior Liens | 60,000 |  |  |
Secured amount of loan | 723,875 |  |  |
Carrying Amount | $ 651,818 |  |  |
Preferred equity investments |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 7.62% | 7.97% |  |
Secured amount of loan |  |  | $ 34,800 |
Preferred equity investments | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Prior Liens | $ 834,515 |  |  |
Secured amount of loan | 181,058 |  |  |
Carrying Amount | $ 178,270 |  |  |
Mezzanine loans |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 9.70% | 10.57% |  |
Mezzanine loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Prior Liens | $ 458,377 |  |  |
Secured amount of loan | 191,575 |  |  |
Carrying Amount | 190,980 |  |  |
Other Loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | 70,146 |  |  |
Carrying Amount | $ 70,000 |  |  |
Multifamily | Loans in excess of 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 3.60% |  |  |
Multifamily | Bridge loans | Loans in excess of 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | $ 417,100 |  |  |
Carrying Amount | $ 415,703 |  |  |
Multifamily | Bridge loans | Loans in excess of 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 2.75% |  |  |
LIBOR Floor rate (as a percent) | 1.36% |  |  |
Multifamily | Bridge loans | Loans in excess of 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
LIBOR Floor rate (as a percent) | 2.38% |  |  |
Multifamily | Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | $ 2,695,857 |  |  |
Carrying Amount | $ 2,683,189 |  |  |
Multifamily | Bridge loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 2.50% |  |  |
LIBOR Floor rate (as a percent) | 0.43% |  |  |
Fixed interest rate (as a percent) | 9.00% |  |  |
Multifamily | Bridge loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 12.72% |  |  |
LIBOR Floor rate (as a percent) | 2.75% |  |  |
Fixed interest rate (as a percent) | 11.00% |  |  |
Multifamily | Preferred equity investments | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Prior Liens | $ 794,984 |  |  |
Secured amount of loan | 178,478 |  |  |
Carrying Amount | $ 177,399 |  |  |
Multifamily | Preferred equity investments | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 4.00% |  |  |
Multifamily | Preferred equity investments | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 14.00% |  |  |
Multifamily | Mezzanine loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Prior Liens | $ 337,352 |  |  |
Secured amount of loan | 109,272 |  |  |
Carrying Amount | $ 108,819 |  |  |
Multifamily | Mezzanine loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 5.00% |  |  |
Multifamily | Mezzanine loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 12.00% |  |  |
Multifamily | Other Loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | $ 28,571 |  |  |
Carrying Amount | $ 28,572 |  |  |
Multifamily | Other Loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 2.83% |  |  |
Multifamily | Other Loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 5.32% |  |  |
Self Storage | Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 3.90% |  |  |
LIBOR Floor rate (as a percent) | 1.23% |  |  |
Secured amount of loan | $ 13,580 |  |  |
Carrying Amount | $ 13,550 |  |  |
Self Storage | Mezzanine loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 11.00% |  |  |
Prior Liens | $ 30,471 |  |  |
Secured amount of loan | 12,713 |  |  |
Carrying Amount | 12,687 |  |  |
Land | Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | 172,657 |  |  |
Carrying Amount | $ 104,788 |  |  |
Land | Bridge loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 4.00% |  |  |
LIBOR Floor rate (as a percent) | 0.15% |  |  |
Fixed interest rate (as a percent) | 0.00% |  |  |
Land | Bridge loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 4.50% |  |  |
LIBOR Floor rate (as a percent) | 0.75% |  |  |
Fixed interest rate (as a percent) | 11.64% |  |  |
Land | Mezzanine loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | $ 48,832 |  |  |
Carrying Amount | $ 48,767 |  |  |
Land | Mezzanine loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 0.00% |  |  |
Land | Mezzanine loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 13.00% |  |  |
Office | Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | $ 122,127 |  |  |
Carrying Amount | $ 120,437 |  |  |
Office | Bridge loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 3.10% |  |  |
LIBOR Floor rate (as a percent) | 1.12% |  |  |
Office | Bridge loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 6.19% |  |  |
LIBOR Floor rate (as a percent) | 2.13% |  |  |
Office | Preferred equity investments | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 15.00% |  |  |
Prior Liens | $ 9,739 |  |  |
Secured amount of loan | 880 |  |  |
Carrying Amount | $ 871 |  |  |
Office | Mezzanine loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 7.44% |  |  |
LIBOR Floor rate (as a percent) | 2.13% |  |  |
Fixed interest rate (as a percent) | 9.00% |  |  |
Prior Liens | $ 60,000 |  |  |
Secured amount of loan | 11,000 |  |  |
Carrying Amount | 10,980 |  |  |
Healthcare | Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | 203,694 |  |  |
Carrying Amount | $ 202,756 |  |  |
Healthcare | Bridge loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 4.00% |  |  |
LIBOR Floor rate (as a percent) | 1.12% |  |  |
Healthcare | Bridge loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 11.60% |  |  |
LIBOR Floor rate (as a percent) | 2.63% |  |  |
Hotel | Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
LIBOR Floor rate (as a percent) | 1.50% |  |  |
Prior Liens | $ 60,000 |  |  |
Secured amount of loan | 142,300 |  |  |
Carrying Amount | $ 141,574 |  |  |
Hotel | Bridge loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 2.75% |  |  |
Hotel | Bridge loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 7.60% |  |  |
LIBOR Floor rate (as a percent) | 2.38% |  |  |
Commercial | Preferred equity investments | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 6.00% |  |  |
Prior Liens | $ 29,792 |  |  |
Secured amount of loan | 1,700 |  |  |
Retail | Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | 39,500 |  |  |
Carrying Amount | $ 39,329 |  |  |
Retail | Bridge loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 4.00% |  |  |
LIBOR Floor rate (as a percent) | 2.13% |  |  |
Retail | Bridge loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 6.00% |  |  |
LIBOR Floor rate (as a percent) | 2.50% |  |  |
Retail | Mezzanine loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 12.00% |  |  |
Prior Liens | $ 30,554 |  |  |
Secured amount of loan | 9,758 |  |  |
Carrying Amount | 9,727 |  |  |
Single-Family Rental | Bridge loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | 30,017 |  |  |
Carrying Amount | $ 29,384 |  |  |
Single-Family Rental | Bridge loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 4.50% |  |  |
LIBOR Floor rate (as a percent) | 2.02% |  |  |
Single-Family Rental | Bridge loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Base spread (as a percent) | 4.85% |  |  |
LIBOR Floor rate (as a percent) | 2.50% |  |  |
Single-Family Rental | Other Loans | Loans less than 3% |  |  |  |
Loans and Investments |  |  |  |
Secured amount of loan | $ 41,575 |  |  |
Carrying Amount | $ 41,428 |  |  |
Single-Family Rental | Other Loans | Loans less than 3% | Minimum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 4.40% |  |  |
Single-Family Rental | Other Loans | Loans less than 3% | Maximum |  |  |  |
Loans and Investments |  |  |  |
Fixed interest rate (as a percent) | 5.90% |  |  |

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- Definition Represents the minimum LIBOR rate on the loans receivable. + References No definition available. + Details
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- Definition The threshold percentage for reporting loans in the schedule of mortgage loans on real estate. + References No definition available. + Details
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- Definition Amount of federal income tax basis of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Footnote 8 -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Footnote 8)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column B -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column B)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of prior lien on real estate securing mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column E -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column E)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin. + References No definition available. + Details
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- Definition Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column G)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of mortgage loan in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, renewed or extended. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Footnote 6)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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