Loans Held for Investment and the Allowance for Credit Losses - Schedule of Paid-in-Kind Interest (Details)	3 Months Ended
	Mar. 31, 2022 USD ($)
Paid In Kind Interest [Abstract]
Balance	$ 3,028,000
Accrued PIK interest	0
Repayments of accrued PIK interest	(313,000)
Balance	$ 2,715,000