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Mortgages Receivable - Additional information (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) loan STD (Db) | Dec. 31, 2019 USD ($) loan | Jun. 30, 2020 USD ($) loan
Mortgage Loans on Real Estate, Default Interest Rate | 18.00% |  |
Payments to Acquire Mortgage Receivable | $ 117,230,923 | $ 64,742,552 |
Proceeds from Collection of Mortgages Receivable | 54,961,570 | 43,347,362 |
Mortgages receivable | $ 155,616,300 | $ 94,348,689 |
Mortgage loan portfolio number of loans | 495 | 438 |
Mortgage loan portfolio number of loans in process of foreclosure | Db | 16 |  |
Number of COVID-19 forbearance requests | loan | 0 |  | 23
Mortgages receivable for COVID-19 forbearance requests |  |  | $ 6,500,000
Deferred interest |  |  | $ 200,000
Mortgage Concentration Risk [Member] |  |  |
Concentration Risk, Percentage | 10.00% | 10.00% |
Mortgages [Member] |  |  |
Payments to Acquire Mortgage Receivable | $ 117,230,923 | $ 64,742,552 |
Minimum [Member] |  |  |
Debt term (in years) | 1 year |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 2,600 |  |
Interest rate (as a percent) | 5.00% |  |
Maximum [Member] |  |  |
Debt term (in years) | 3 years |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 10,780,000 |  |
Interest rate (as a percent) | 13.00% |  |
Nine Mortgage Loans [Member] |  |  |
Mortgages receivable | $ 3,100,000 |  |
Thirteen Mortgage Loans [Member] |  |  |
Mortgages receivable |  | $ 2,800,000 |
Mortgage loan portfolio number of loans in process of foreclosure | loan |  | 9 |

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- Definition Amount of contractual principal due at origination 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 F -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 F)) -URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014 + Details
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