Loans Portfolio - Summary of Carrying Value and Significant Characteristics of Loans Receivable on Non-accrual Status (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2022		Dec. 31, 2021
Financing Receivable Allowance For Credit Losses [Line Items]
Carrying Value	$ 148,609	[1]	$ 363,343	[2]
Unpaid Principal Balance	148,119	[1]	366,512	[2]
Specific CECL Reserve	6,000		(6,333)	[2]
Net Carrying Value	148,609	[1]	357,010	[2]
Carrying value of associated financings	(33,500)		(122,450)
Net carrying value	115,109		234,560
Loans Receivable Current Non-Accrual
Financing Receivable Allowance For Credit Losses [Line Items]
Carrying Value			89,063
Unpaid Principal Balance			92,913
Specific CECL Reserve			(333)
Net Carrying Value			$ 88,730
Loans Receivable Current Non-Accrual | Risk Rating Five
Financing Receivable Allowance For Credit Losses [Line Items]
Origination Date			May 05, 2017
Initial Maturity Date			Jan. 01, 2023
Date Through Which Interest Collected			Dec. 01, 2021
Carrying Value			$ 11,533
Unpaid Principal Balance			11,533
Specific CECL Reserve			(333)
Net Carrying Value			$ 11,200
Interest Recognition Method			Cost Recovery
Loans Receivable Current Non-Accrual | Risk Rating Four
Financing Receivable Allowance For Credit Losses [Line Items]
Origination Date			Jul. 10, 2018
Initial Maturity Date			Dec. 10, 2023
Date Through Which Interest Collected			Dec. 01, 2021
Carrying Value			$ 77,530
Unpaid Principal Balance			81,380
Net Carrying Value			$ 77,530
Interest Recognition Method			Cash Basis
Delinquent Non Accrual
Financing Receivable Allowance For Credit Losses [Line Items]
Carrying Value	148,609	[3]	$ 274,280
Unpaid Principal Balance	148,119	[3]	273,599
Specific CECL Reserve			(6,000)
Net Carrying Value	$ 148,609	[3]	$ 268,280
Delinquent Non Accrual | Risk Rating 4
Financing Receivable Allowance For Credit Losses [Line Items]
Origination Date	Mar. 29, 2018		Aug. 02, 2019
Initial Maturity Date	Jan. 26, 2021		Oct. 30, 2021
Date Through Which Interest Collected	Jul. 09, 2020		Nov. 01, 2021
Carrying Value	$ 78,109		$ 67,000
Unpaid Principal Balance	77,619		67,000
Net Carrying Value	$ 78,109		$ 67,000
Interest Recognition Method	Cash Basis	[4]	Cash Basis
Delinquent Non Accrual | Risk Rating 4
Financing Receivable Allowance For Credit Losses [Line Items]
Origination Date	Aug. 02, 2019		Sep. 21, 2018
Initial Maturity Date	Oct. 30, 2021		Oct. 01, 2020
Date Through Which Interest Collected	Nov. 01, 2021		Feb. 01, 2020
Carrying Value	$ 67,000		$ 116,211
Unpaid Principal Balance	67,000		116,020
Net Carrying Value	$ 67,000		$ 116,211
Interest Recognition Method	Cash Basis	[4]	Cash Basis
Delinquent Non Accrual | Risk Rating 4
Financing Receivable Allowance For Credit Losses [Line Items]
Origination Date			Mar. 29, 2018
Initial Maturity Date			Jan. 26, 2021
Date Through Which Interest Collected			Jul. 09, 2020
Carrying Value			$ 76,069
Unpaid Principal Balance			75,579
Net Carrying Value			$ 76,069
Interest Recognition Method			Cash Basis
Delinquent Non Accrual | Risk Rating 5
Financing Receivable Allowance For Credit Losses [Line Items]
Origination Date	Jul. 01, 2019		Jul. 01, 2019
Initial Maturity Date	Dec. 30, 2020		Dec. 30, 2020
Date Through Which Interest Collected	Jul. 01, 2020		Jul. 01, 2020
Carrying Value	$ 3,500		$ 15,000
Unpaid Principal Balance	3,500		15,000
Specific CECL Reserve			(6,000)
Net Carrying Value	$ 3,500		$ 9,000
Interest Recognition Method	Cost Recovery	[4]	Cost Recovery

[1] Loans classified as non-accrual represented 2.1% of the total loan portfolio at June 30, 2022, based on unpaid principal balance.

[2] Loans classified as non-accrual and delinquent on debt service represented 4.1% of the total loan portfolio at December 31, 2021, based on unpaid principal balance.

[3] Excludes one additional loan with a carrying value of $105.3 million that is in maturity default and over 90 days delinquent on June 30, 2022, and one loan with a carrying value of $31.5 million that is in maturity default but current on interest payments as of June 30, 2022.

[4] No interest income was recognized on these loans for the six months ended June 30, 2022.