Repurchase Agreements and Credit Facilities - Additional Information (Details) - USD ($)		1 Months Ended	9 Months Ended	32 Months Ended
	Mar. 10, 2021	May 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Jun. 30, 2022	May 06, 2019
CF Repo Facility
Repurchase Agreement [Line Items]
Repurchase agreement, maximum advance amount					$ 450,000,000
CF Repo Facility | Secured Overnight Financing Rate (SOFR) | Minimum
Repurchase Agreement [Line Items]
Interest rate spread			1.75%
Floor rate			0.15%
CF Repo Facility | Secured Overnight Financing Rate (SOFR) | Maximum
Repurchase Agreement [Line Items]
Interest rate spread			2.50%
Floor rate			0.75%
JP Morgan Repo Facility
Repurchase Agreement [Line Items]
Repurchase agreement, maximum advance amount						$ 150,000,000
Floor rate			0.10%
Maturity date		May 06, 2023
Preferred dividends plus interest expense		150.00%
EBITDA to Fixed Charges ratio			144.00%
Credit facility advance percentage			39.00%
JP Morgan Repo Facility | Minimum
Repurchase Agreement [Line Items]
Interest rate spread			1.85%
JP Morgan Repo Facility | Maximum
Repurchase Agreement [Line Items]
Interest rate spread			2.50%
JP Morgan Repo Facility | London Interbank Offered Rate | Minimum
Repurchase Agreement [Line Items]
Interest rate spread				1.75%
JP Morgan Repo Facility | London Interbank Offered Rate | Maximum
Repurchase Agreement [Line Items]
Interest rate spread				2.50%
Western Alliance Credit Facility
Repurchase Agreement [Line Items]
Repurchase agreement, maximum advance amount	$ 75,000,000
Maturity date	Mar. 10, 2023
Borrowing base period for eligible pledged assets become ineligible	36 months
Convertible by option term loan initial maturity period	2 years
Percentage of conversion fee of convertible by option term loan.	0.25%
Minimum average unrestricted aggregate deposit balance amount to be maintained	$ 3,750,000
Increased interest rate due to failure to meet the minimum deposit balance	0.25%
Western Alliance Credit Facility | Minimum
Repurchase Agreement [Line Items]
Loan-to-unpaid balance percentage	60.00%
Loan-to-appraised value percentage	45.00%
Western Alliance Credit Facility | Maximum
Repurchase Agreement [Line Items]
Loan-to-unpaid balance percentage	70.00%
Loan-to-appraised value percentage	50.00%
Western Alliance Credit Facility | London Interbank Offered Rate
Repurchase Agreement [Line Items]
Interest rate spread	3.25%
Floor rate	4.00%