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Loans Held for Investment - Summary of the Companys loan portfolio (Details) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) Loans | Dec. 31, 2020 USD ($) Loans
Loans and Financing Receivable |  |
Number Of Loans | Loans | 19 | 20
Principal Balance | $ 482,089,565 | $ 424,174,758
Carrying Value | 480,462,652 | 422,280,515
Fair Value | $ 478,397,706 | $ 419,407,194
Weighted-average coupon rate | 8.50% | 8.51%
Weighted-average remaining term (years) | 1 year 1 month 20 days | 1 year 5 months 23 days
Fixed Rate |  |
Loans and Financing Receivable |  |
Number Of Loans | Loans | 5 | 6
Principal Balance | $ 92,808,312 | $ 56,335,792
Carrying Value | 93,656,356 | 56,464,310
Fair Value | $ 93,571,526 | $ 56,284,334
Weighted-average coupon rate | 12.94% | 12.17%
Weighted-average remaining term (years) | 1 year 2 months 23 days | 1 year 9 months 10 days
Floating rate |  |
Loans and Financing Receivable |  |
Number Of Loans | Loans | 14 | 14
Principal Balance | $ 389,281,253 | $ 367,838,966
Carrying Value | 386,806,296 | 365,816,205
Fair Value | $ 384,826,180 | $ 363,122,860
Weighted-average coupon rate | 7.44% | 7.95%
Weighted-average remaining term (years) | 1 year 1 month 13 days | 1 year 5 months 8 days

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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=120402547&loc=d3e617274-123014 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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