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SECURED FINANCING - Mortgage Loans Payable (Details) - Commercial Mortgage Loans - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 508,565,000 | $ 485,005,000
Mortgage Principal | 514,005,000 | 490,631,000
Joint Ventures |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | 316,631,000 | 316,566,000
Mortgage Principal | $ 318,433,000 | $ 318,562,000
Joint Ventures | Minimum |  |
Debt Instrument [Line Items] |  |
Interest Rate | 4.03% | 4.03%
Joint Ventures | Maximum |  |
Debt Instrument [Line Items] |  |
Interest Rate | 4.96% | 4.96%
Joint Ventures | LIBOR |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 16,517,000 | $ 16,029,000
Mortgage Principal | $ 16,325,000 | $ 16,325,000
Variable interest rate | 2.15% | 2.15%
Virginia |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 81,980,000 | $ 82,940,000
Mortgage Principal | $ 83,710,000 | $ 84,702,000
Virginia | Minimum |  |
Debt Instrument [Line Items] |  |
Interest Rate | 2.34% | 2.34%
Virginia | Maximum |  |
Debt Instrument [Line Items] |  |
Interest Rate | 4.55% | 4.55%
Virginia | LIBOR |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 24,447,000 |
Mortgage Principal | $ 25,000,000 |
Variable interest rate | 2.85% |
Texas |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 31,400,000 | $ 31,667,000
Mortgage Principal | $ 32,877,000 | $ 33,167,000
Interest Rate | 3.28% | 3.28%
Utah |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 7,024,000 | $ 7,077,000
Mortgage Principal | $ 7,041,000 | $ 7,096,000
Interest Rate | 3.69% | 3.69%
Utah | LIBOR |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 9,706,000 | $ 9,706,000
Mortgage Principal | $ 9,706,000 | $ 9,706,000
Variable interest rate | 2.75% | 3.50%
Minnesota |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 13,142,000 | $ 13,243,000
Mortgage Principal | $ 13,175,000 | $ 13,276,000
Interest Rate | 3.69% | 3.69%
Wisconsin |  |
Debt Instrument [Line Items] |  |
Mortgage Carrying Value | $ 7,718,000 | $ 7,777,000
Mortgage Principal | $ 7,738,000 | $ 7,797,000
Interest Rate | 3.69% | 3.69%

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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