COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT Summary of Commercial Loan Risk Ratings (Details)		12 Months Ended
		Dec. 31, 2022 USD ($) mortgageLoan	Dec. 31, 2021 USD ($) mortgageLoan
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | mortgageLoan		1
Outstanding Principal	[1]	$ 1,076,148,186	$ 1,001,825,294
Average risk rate		3.0	2.3
Purchases and advances		$ 345,921,827	$ 983,694,326
Commercial Real Estate Portfolio Segment
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | mortgageLoan		71	66
Outstanding Principal		$ 1,076,865,099	$ 1,001,869,994
Year 1		201,852,224	797,454,369
Year 2		785,619,407	19,827,960
Year 3			109,327,972
Year 4		42,077,193	55,526,061
Year 5		22,672,623	19,688,932
Before year 5		19,668,071
Purchases and advances		$ 345,158,577	$ 983,694,326
Commercial Real Estate Portfolio Segment | Risk Rating, 1
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | mortgageLoan		0	0
Outstanding Principal		$ 0	$ 0
Year 1		0	0
Year 2		0	0
Year 3			0
Year 4		0	0
Year 5		0	$ 0
Before year 5		$ 0
Commercial Real Estate Portfolio Segment | Risk Rating, 2
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | mortgageLoan		11	40
Outstanding Principal		$ 153,933,750	$ 634,438,386
Year 1		85,198,084	596,052,235
Year 2		67,999,500	4,920,000
Year 3			33,466,151
Year 4		0	0
Year 5		0	$ 0
Before year 5		0
Commercial loans that paid off		144,600,000
Purchases and advances		85,900,000
Transition of commercial loans held for sale to a lower risk rating		$ 47,700,000
Commercial Real Estate Portfolio Segment | Risk Rating, 3
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | mortgageLoan		55	23
Outstanding Principal		$ 852,474,681	$ 342,350,405
Year 1		101,654,140	201,402,134
Year 2		672,421,907	6,870,561
Year 3			70,566,216
Year 4		42,077,193	43,777,862
Year 5		16,672,623	$ 19,688,932
Before year 5		$ 19,668,071
Average risk rating, percentage		93.80%	97.50%
Commercial loans that paid off		$ 103,500,000
Purchases and advances		231,700,000
Transition of commercial loans held for sale to a higher risk rating		437,000,000
Transition of commercial loans held for sale to a lower risk rating		$ 5,300,000
Commercial Real Estate Portfolio Segment | Risk Rating, 4
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | mortgageLoan		3	3
Outstanding Principal		$ 47,448,000	$ 25,081,203
Year 1		15,000,000	0
Year 2		32,448,000	8,037,399
Year 3			5,295,605
Year 4		0	11,748,199
Year 5		0	$ 0
Before year 5		0
Commercial loans that paid off		9,500,000
Purchases and advances		15,000,000
Transition of commercial loans held for sale to a higher risk rating		$ 32,400,000
Commercial Real Estate Portfolio Segment | Risk Rating, 5
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | mortgageLoan		2	0
Outstanding Principal		$ 23,008,668	$ 0
Year 1		0	0
Year 2		12,750,000	0
Year 3			0
Year 4		0	0
Year 5		6,000,000	$ 0
Before year 5		0
Transition of commercial loans held for sale to a higher risk rating		10,300,000
Transition of commercial loans held for sale to a risk rating two steps higher		$ 12,800,000

[1] Our consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs") as the Company was the primary beneficiary of these VIEs. As of December 31, 2022 and December 31, 2021, assets of the consolidated VIEs totaled $1,005,507,371 and $1,003,896,995, respectively and the liabilities of consolidated VIEs totaled $831,575,144 and $827,390,435, respectively.