Loans Held for Investment and Allowance for Credit Losses on Loans - Summary of Rental Income and Operating Expenses (Details) - Commercial Real Estate - Other Real Estate Owned [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Rental income	$ 2,347	$ 2,703	$ 7,750	$ 7,277
Operating expense	$ 2,381	$ 2,036	$ 7,120	$ 6,599