Loans Held for Sale or Investment at Fair Value - Fair Value Measurements, Recurring (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, at fair value	$ 4,456	$ 11,593
Loans held for investment, at fair value	5,633	83,143
Fair Value Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, at fair value	4,456	11,593
Loans held for investment, at fair value	5,633	83,143
Total measured	10,089	94,736
Fair Value Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, at fair value	0	0
Loans held for investment, at fair value	0	0
Total measured	0	0
Fair Value Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, at fair value	0	0
Loans held for investment, at fair value	0	0
Total measured	0	0
Fair Value Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, at fair value	4,456	11,593
Loans held for investment, at fair value	5,633	83,143
Total measured	$ 10,089	$ 94,736