Consolidated Statements of Members' Equity and Shareholders' Equity - USD ($) $ in Thousands		Total		Cumulative Effect, Period of Adoption, Adjustment [Member]	Class A Units [Member]	Class P Units [Member]	Preferred Stock [Member]	Common Stock [Member]	Common Stock [Member] Class A Units [Member]	Common Stock [Member] Class P Units [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Retained Earnings (Accumulated Deficit) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance as of December 31, 2018 (Predecessor) at Dec. 31, 2018		$ 685,110					$ 684,979		$ 1		$ 767	$ (637)
Balance as of (in units) at Dec. 31, 2018							6,817,701		20,950	50
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contributions		$ 356,386					$ 356,386
Contributions, Shares		850					3,563,859
Reinvestments		$ 33,637					$ 33,637
Reinvestments, Shares							336,366
Net income		69,923	[1]									69,923
Distributions		(102,204)										(102,204)
Redemptions		(155,744)					$ (155,744)
Redemptions, Shares							(1,555,623)
Compensation Expense Related to Grant of Profits Interest		734									734
Compensation Expense Related to Grant of Profits Interest, Shares					(100)	100
Grants of Restricted Units		474									474
Grants of Restricted Units, Shares					150
Balance at Nov. 14, 2019		454,976					$ 467,235					(12,259)
Balance as of November 14, 2019 (Predecessor) at Nov. 14, 2019	[2]	888,316					$ 919,258		$ 1		1,975	(32,918)
Balance as of (in units) at Nov. 14, 2019	[2]						9,162,303		21,850	150
Balance, Shares at Nov. 14, 2019							4,655,758
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Recapitalization of BRELF II, LLC and Broadmark - Shares							(4,655,758)	86,118,101
Recapitalization of BRELF II, LLC and Broadmark		325,657					$ (467,235)	$ 86			794,798	(1,992)
Consent fee paid to warrant holders		(66,679)									(66,679)
Issuance of shares in connection with Business Combination - Shares								45,896,534
Issuance of shares in connection with Business Combination		479,619						$ 46			479,573
Net income		5,313										5,313
Dividends		(15,842)										15,842
Issuance of shares for exercised Warrants - Shares								1,000
Issuance of Shares for Exercised Warrants		11									11
Stock-based compensation expense for restricted stock units		1,417									1,417
Balance at Dec. 31, 2019		1,184,472						$ 132			1,209,120	(24,780)
Balance, Shares at Dec. 31, 2019								132,015,635
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		90,231										90,231
Dividends		(103,174)										103,174
Issuance of shares for vested restricted stock units (in shares)								516,723
Issuance of shares for exercised Warrants - Shares								25
Stock-based compensation expense for restricted stock units		4,867									4,867
Balance at Dec. 31, 2020		1,174,421		$ (1,975)				$ 132			1,213,987	(39,698)	$ (1,975)
Balance, Shares at Dec. 31, 2020								132,532,383
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		82,488										82,488
Dividends		(111,411)										111,411
Issuance of shares for vested restricted stock units (in shares)								231,053
Shares withheld for tax liability		(485)									(485)
Shares withheld for tax liability (in shares)								(47,098)
Stock-based compensation expense for restricted stock units		3,455									3,455
Balance at Dec. 31, 2021		$ 1,148,468						$ 132			$ 1,216,957	$ (68,621)
Balance, Shares at Dec. 31, 2021								132,716,338

[1] Predecessor period is combined as disclosed in Note 1

[2] Predecessor period is combined as disclosed in Note 1.