Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Measured at Carrying And Estimated Fair Value

The carrying value and estimated fair value of financial instruments not recorded at fair value on a recurring basis but required to be disclosed at fair value were as follows (in thousands):

	December 31, 2021
							Fair value hierarchy level
	Carrying Value		Par Value		Fair Value		Level 1		Level 2		Level 3
Loans receivable held-for-investment, net	$	6,340,295	$	6,441,238	$	6,434,157	$	—	$	—	$	6,434,157
Interests in loans receivable held-for-    investment, net		161,850		161,566		161,883		—		—		161,883
Repurchase agreements		3,489,511		3,489,511		3,484,834		—		—		3,484,834
Loan participations sold, net		167,744		168,322		168,738		—		—		168,738
Notes payable, net		48,000		48,000		48,000		—		—		48,000
Secured term loan, net		739,762		762,717		762,717		—		—		762,717
Debt related to real estate owned, net		289,806		290,000		281,723		—		—		281,723

	December 31, 2020
							Fair value hierarchy level
	Carrying Value		Par Value		Fair Value		Level 1		Level 2		Level 3
Loans receivable held-for-investment, net	$	6,125,825	$	6,152,331	$	6,155,526	$	—	$	—	$	6,155,526
Interests in loans receivable held-for-    investment, net		338,270		338,957		338,695		—		—		338,695
Repurchase agreements		2,685,203		2,685,203		2,668,464		—		—		2,668,464
Loan participations sold, net		516,484		519,420		524,010		—		—		524,010
Notes payable, net		303,515		305,294		308,069		—		—		308,069
Secured term loan, net		746,095		768,554		769,949		—		—		769,949