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SCHEDULE IV - MORTGAGE LOANS ON REAL ESTATE - Loans On Real Estate (Details) - USD ($) $ in Thousands | 12 Months Ended |
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Dec. 31, 2017 | Dec. 31, 2016
Mortgage Loans on Real Estate [Line Items] |  |
Face Amount of Notes Receivable | $ 241,200 |
Net carrying amount of notes receivable | $ 153,829 | $ 276,163
First Mortgage Loan, 6.0% Loan, Due 6/1/2018 |  |
Mortgage Loans on Real Estate [Line Items] |  |
Effective Interest Rate | 6.00% |
Face Amount of Notes Receivable | $ 15,000 |
Net carrying amount of notes receivable | $ 15,000 |
First Mortgage Loan LIBOR Plus 7.1% Due 6/252018 |  |
Mortgage Loans on Real Estate [Line Items] |  |
Basis spread on variable rate | 7.10% |
Face Amount of Notes Receivable | $ 26,000 |
Net carrying amount of notes receivable | $ 26,000 |
First Mortgage Loan, 8.1% Loan, Due 2019 |  |
Mortgage Loans on Real Estate [Line Items] |  |
Effective Interest Rate | 8.10% |
Face Amount of Notes Receivable | $ 153,400 |
Net carrying amount of notes receivable | $ 60,695 |
Zero Coupon Loan Due 5/31/2020 |  |
Mortgage Loans on Real Estate [Line Items] |  |
Effective Interest Rate | 2.50% |
Face Amount of Notes Receivable | $ 29,793 |
Net carrying amount of notes receivable | $ 31,778 |
Mezzanine Loan 18.0% Loan Due 7/1/2020 |  |
Mortgage Loans on Real Estate [Line Items] |  |
Effective Interest Rate | 18.00% |
Face Amount of Notes Receivable | $ 3,007 |
Net carrying amount of notes receivable | $ 5,106 |
Preferred Equity, 15.3% Loan, Due 2/3/2021 |  |
Mortgage Loans on Real Estate [Line Items] |  |
Effective Interest Rate | 15.30% |
Face Amount of Notes Receivable | $ 14,000 |
Net carrying amount of notes receivable | $ 15,250 |

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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 The carrying amount of the outstanding balance due under the mortgage loan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of the contractual principal due at the origination of the mortgage loan (face amount). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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- Definition The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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