Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		2 Months Ended	3 Months Ended			10 Months Ended		12 Months Ended
		Dec. 31, 2019	Mar. 31, 2020	Mar. 31, 2019		Nov. 14, 2019		Dec. 31, 2018
Condensed Consolidated Statement of Cash Flows [Abstract]
Financial Designation, Predecessor and Successor [Fixed List]		Successor	Successor	Predecessor	[1]	Predecessor		Predecessor
Cash flows from operating activities
Net income			$ 27,279	$ 24,989	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization			(904)
Depreciation	[1]			18
Compensation expense related to grant of profits interest	[1]			734
Share-based compensation expense for restricted stock units			914
Grants of restricted units	[1]			134
Provision for loan losses			3,622	(224)	[1]
Write down of investment in real property	[1]			686
Fair value adjustment to optional subscription liability			(4,604)
Changes in operating assets and liabilities:
Interest and fees receivable			(2,351)	(1,185)	[1]
Change in other assets			(53)	109	[1]
Accounts payable and accrued liabilities			(277)	(450)	[1]
Net cash provided by operating activities			23,626	24,811	[1]
Cash flows from investing activities:
Investments in fixed assets	[1]			(14)
Proceeds from sale of real property			2,213	407	[1]
Improvements to investments in real property			(79)	(66)	[1]
Investments in mortgage notes receivable	[1]			(71,236)
Change in mortgage notes receivable			31,434
Net cash provided by (used in) investing activities			33,568	(70,909)	[1]
Cash flows from financing activities:
Contributions from members	[1]			79,535
Contributions received in advance	[1]			(117)
Dividends paid			(36,973)
Distributions	[1]			(16,116)
Redemptions of members	[1]			(13,331)
Net cash provided by (used in) financing activities			(36,973)	49,971	[1]
Net increase in cash and cash equivalents			20,221	3,873	[1]
Cash and cash equivalents, beginning of period			238,214	112,234	[1]	$ 112,234	[1]
Cash and cash equivalents, end of period		$ 238,214	258,435	116,107	[1]			$ 112,234	[1]
Supplemental disclosure of non-cash investing and financing activities
Dividends payable		$ 15,842	10,569
Reinvested distributions	[1]			$ 7,094
Measurement period adjustment to goodwill and intangible assets			$ 5,000

[1] Predecessor periods are combined as disclosed in Note 1.