RELATED PARTY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES (Details)						1 Months Ended	3 Months Ended
	Dec. 20, 2019 USD ($)	Apr. 25, 2019 USD ($)	Apr. 01, 2019 USD ($)	Oct. 04, 2018 USD ($)	Jan. 08, 2018 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Base management fee percentage on first $500 million share capital					0.50%
Base management fee percentage in excess of $500 million share capital					0.25%
Annual reimbursement cap until 2019					$ 2,500,000
Annual reimbursement cap after 2019 until share capital exceeds of $500 million					$ 3,500,000
Renewal period of the agreement					2 years
Agreement Violation Termination Fee Includes An Amount Times Sum of Average Annual Base and Incentive Management Fee					3
Agreement Violation Termination Fee Includes An Amount Times Sum of Average Energy Capital Business Expense Reimbursement and Employee Cost Reimbursement Expense					1
Termination fee period					2 years
Consideration on disposal							$ 57,000,000
Notes receivable							$ 57,000,000
Interest rate for note							5.00%
HFS loan acquired by Hunt						$ 54,100,000	$ 1,271,000
Termination fee payable upon termination of Management Agreement							0
External management fees and reimbursable expenses							$ 2,760,000	$ 2,268,000
Term of note receivable							7 years
Equity Method Investments						316,677,000	$ 368,598,000
Reimbursement of compensation related expenses shareholders equity benchmark amount							500,000,000
Financing Receivable, Net, Unpaid Principal Balance						54,100,000	1,280,000
Carrying value of Loan receivable						54,100,000	1,271,000
Investments in partnerships (includes $349,362 and $296,855 pledged as collateral at March 31, 2020 and December 31, 2019, respectively)						316,677,000	368,598,000
Investment in Debt Securities
Net proceeds from sale of affordable house property		$ 13,100,000
Hunt Companies [Member]
Loans and leases receivable from related party				$ 67,000,000		53,600,000
Interest income, related party								800,000
Interest Receivable						700,000	0
Financing Receivable, Net, Unpaid Principal Balance	$ 1,100,000
Carrying value of Loan receivable	300,000
Investments in partnerships (includes $349,362 and $296,855 pledged as collateral at March 31, 2020 and December 31, 2019, respectively)	900,000
Proceeds from the sale of real estate and other investments	3,100,000
Gain (loss) on sale of loans and real estate related investments	1,900,000
Proceeds from loans receivable	$ 13,400,000
Hunt Companies [Member] | External Management Fees and Expenses Reimbursement
Incentive fee					20.00%
External management fee, contract in excess for incentive fee.					7.00%
Related party incentive fee expense							0	0
External management fees and reimbursable expenses							2,800,000	$ 2,300,000
Hunt Companies [Member] | External Management Fees and Expenses Reimbursement | External Manager [Member]
Management fees and expense reimbursements payable						$ 1,200,000	$ 2,800,000
Hunt Companies [Member] | Investment in Debt Securities
Service fees waived by agent		900,000
Hunt Companies [Member] | Investment in Debt Securities
Proceeds from redemption of bonds		$ 900,000
Solar Development Lending, LLC [Member] | Hunt Companies [Member]
Ownership interest			30.00%
Payments to Acquire Equity Method Investments			$ 11,300,000
Minimum [Member] | Hunt Companies [Member] | Affordable Housing Partnerships [Member]
Ownership interest	74.25%
Maximum [Member] | Hunt Companies [Member] | Affordable Housing Partnerships [Member]
Ownership interest	74.92%