Investment in Mortgage Notes and Notes Receivable (Details) $ in Thousands | 9 Months Ended | | | |
Sep. 30, 2020USD ($) | Jan. 01, 2020USD ($) | Dec. 31, 2019USD ($) | Sep. 30, 2019USD ($) |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
Financing Receivable, Allowance for Credit Loss | $ 12,546 | $ 2,163 | | | $ 0 |
Provision for Loan, Lease, and Other Losses | 10,383 | | | | |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0 | | | | |
Financing Receivable, Allowance for Credit Loss, Recovery | 0 | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | 362,207 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 362,011 | | $ 357,391 | [1] | |
Mortgage Note and Notes Receivable Commitments | 23,678 | | | | |
Notes Receivable | $ 7,400 | | 14,000 | | |
Number of borrowers with deferred interest | 7 | | | | |
Mortgage Receivable [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
Financing Receivable, Allowance for Credit Loss | $ 5,684 | 2,000 | | | |
Provision for Loan, Lease, and Other Losses | 3,684 | | | | |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0 | | | | |
Financing Receivable, Allowance for Credit Loss, Recovery | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 7.75%, due June 30, 2025 [Member] | Attraction Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 7.75% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 27,423 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 27,631 | | 27,423 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 7.85%, due January 3, 2027 [Member] | Fitness & Wellness Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 7.85% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 10,905 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 11,201 | | 10,977 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 7.55%, due July 31, 2029 [Member] | Fitness & Wellness Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 7.55% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 8,673 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 8,931 | | 5,985 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 417 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 8.25%, December 31, 2029 [Member] | Ski Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 8.25% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 38,106 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 37,895 | | 37,000 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 18,894 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 7.85%, due June 30, 2030 [Member] | Fitness & Wellness Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 7.85% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 6,551 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 6,755 | | 5,803 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 4,367 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 6.99%, due September 30, 2031 [Member] | Experiential Lodging Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 7.01% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 71,223 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 68,605 | | 70,396 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 11.31%, due June 1, 2033 [Member] | Eat & Play Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 11.31% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 11,428 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 11,883 | | 11,582 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 11.61%, due December 1, 2034 [Member] [Member] | Ski Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 11.78% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 51,050 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 51,028 | | 51,050 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 10.75%, due December 1, 2034 [Member] | Ski Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 10.75% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 37,562 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 37,420 | | 37,562 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 11.21%, due December 1, 2034 [Member] | Ski Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 11.21% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 4,550 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 4,401 | | 4,550 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 8.57%, due January 5, 2036 [Member] | Ski Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 8.57% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 21,000 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 21,000 | | 21,000 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, due May 31, 2036 [Member] | Eat & Play Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 10.25% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 17,505 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 18,131 | | 17,505 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 9.75% due August 1, 2036 [Member] | Eat & Play Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 9.75% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 18,068 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 18,676 | | 18,068 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Notes, 8.84%, due April 30, 2037 [Member] | Education Property Member | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 9.02% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 5,012 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 5,186 | | 5,048 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 7.85% due January 31, 2038 [Member] | Fitness & Wellness Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 7.85% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 10,292 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 10,404 | | 10,360 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 7.75%, due May 9, 2039 [Member] | early childhood education center [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 7.87% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 4,200 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 4,339 | | 4,258 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 8.125%, due June 17, 2039 [Member] | Eat & Play Properties [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 8.13% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 14,700 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 14,799 | | 14,800 | [1] | |
Mortgage Note and Notes Receivable Commitments | $ 0 | | | | |
Mortgage Receivable [Member] | Mortgage Note, 8.25%, due October 31, 2019 [Member] | early childhood education center [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 8.25% | | | | |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 3,959 | | | | |
Mortgage Loans on Real Estate, Commercial and Consumer, Net | 3,726 | | $ 4,024 | [1] | |
Mortgage Note and Notes Receivable Commitments | 0 | | | | |
Unfunded Loan Commitment [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
Financing Receivable, Allowance for Credit Loss | 144 | 114 | | | |
Provision for Loan, Lease, and Other Losses | 30 | | | | |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0 | | | | |
Financing Receivable, Allowance for Credit Loss, Recovery | 0 | | | | |
Notes Receivable [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
Financing Receivable, Allowance for Credit Loss | 6,718 | $ 49 | | | |
Provision for Loan, Lease, and Other Losses | 6,669 | | | | |
Financing Receivable, Allowance for Credit Loss, Writeoff | 0 | | | | |
Financing Receivable, Allowance for Credit Loss, Recovery | 0 | | | | |
Notes Receivable [Member] | Note, 8.0%, due May 2, 2024 [Member] | | | | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | | | | |
Provision for Loan, Lease, and Other Losses | 6,500 | | | | |
Financing Receivable, Accrued Interest, Writeoff | $ 300 | | | | |
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[1] | (1) Balances as of December 31, 2019 are prior to the adoption of ASC Topic 326. |