Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Income Tax [Line Items]
Excise tax percentage	100.00%		100.00%
Reserve for uncertain income tax positions	$ 0		$ 0		$ 0
Interest for underpayment of income taxes	0		0	$ 0
Penalties for underpayment of income taxes		$ 0
Current portion of income tax expense (benefit)	100,000	$ 200,000	$ 200,000	$ 1,200,000
Effective income tax rate (in percent)			0.30%	1.80%
Remaining capital loss carryforwards	174,300,000		$ 174,300,000
Capital loss carryforward	$ 13,300,000		13,300,000
CRE Debt Securities
Income Tax [Line Items]
Loss on sale of debt						$ (203,400,000)
Capital gains					15,800,000	$ 0
Remaining capital loss carryforwards					187,600,000
CRE Debt Securities | Minimum
Income Tax [Line Items]
Percentage of REIT taxable income distributed to stockholders	90.00%
TRSs
Income Tax [Line Items]
Deferred tax assets	$ 0		0		0
Deferred tax liabilities, net	$ 100,000		$ 100,000		$ 300,000
REIT Subsidiaries
Income Tax [Line Items]
Equity interest percentage by parent	100.00%		100.00%
Sub-REIT
Income Tax [Line Items]
Equity interest percentage by parent	100.00%		100.00%
U.S. federal corporate tax rate (in percent)			21.00%