Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities
Net income (loss)	$ (116,391)	$ 82,488	$ 90,231
Adjustments to reconcile net income to net cash provided by operating activities:
Accretion of deferred origination and amendment fees	(21,608)	(27,741)	(23,114)
Depreciation and amortization	1,314	741	(558)
Goodwill impairment	136,965	0	0
Amortization of right of use assets	407	382	446
Amortization of debt issuance costs	572	78	0
Amortization of credit facility costs	1,510	1,255	0
Stock-based compensation expense for restricted stock units	3,779	3,455	4,867
Provision for credit losses, net	38,266	6,179	6,722
Gain on sale of real property	(984)	0	0
Impairment on real property	7,596	0	0
Change in fair value of warrant liabilities	(1,813)	1,838	(5,492)
Changes in operating assets and liabilities:
Interest and fees receivable, net	1,507	(3,169)	(10,249)
Other assets	16	385	(1,073)
Accounts payable and accrued liabilities	6,553	(1,397)	2,469
Lease liabilities	(471)	(364)	(446)
Net cash provided by operating activities	57,218	64,130	63,803
Cash flows from investing activities:
Fundings of mortgage notes receivable	(540,579)	(675,009)	445,794
Principal collections	500,486	569,104	458,309
Origination and amendment fees received on mortgage notes receivable	15,073	13,916	13,670
Purchases of property and equipment	(137)	(476)	0
Proceeds from sale of real property	8,365	4,319	6,356
Improvements in real property	(5,911)	(4,435)	(119)
Repurchase of participations in mortgage notes receivable	0	(43,498)	0
Net cash provided by (used in) investing activities	(22,703)	(136,079)	32,422
Cash flows from financing activities:
Dividends paid	(106,932)	(110,072)	(111,064)
Purchase of treasury stock	(5,000)	0	0
Proceeds from issuance of senior unsecured notes	0	100,000	0
Payment of debt issue costs	0	(2,855)	0
Payment of costs to obtain financing	0	(5,125)	0
Proceeds from borrowings on credit facilities	45,000	50,000	0
Repayment of borrowings on credit facilities	(45,000)	(50,000)	0
Payment of taxes on shares withheld for tax liability	(508)	(485)	0
Net cash used in financing activities	(112,440)	(18,537)	(111,064)
Net decrease in cash and cash equivalents	(77,925)	(90,486)	(14,839)
Cash and cash equivalents, beginning of period	132,889	223,375	238,214
Cash and cash equivalents, end of period	54,964	132,889	223,375
Supplemental disclosure of cash flow information:
Interest paid	5,193	0	0
Supplemental disclosure of non-cash investing and financing activities
Dividends payable	4,654	9,291	7,952
Measurement Period Adjustment to Goodwill and Intangible Assets	0	0	5,000
Mortgage notes receivable converted to investment in real property	54,230	54,349	8,873
Investments in real property converted to mortgage notes receivable	25,900	0	0
Interest and fee receivables converted to investments in real property	1,244	4,129	0
Operating lease right-of-use assets	0	6,360	0
Lease liabilities arising from obtaining right-of-use assets	0	8,319	0
Property and equipment purchased through tenant improvement allowance	$ 0	$ 1,959	$ 0