Fair Value Measurements - Assets and liabilities measured at fair value on nonrecurring basis (Details) - Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	$ 7,808	$ 2,536
Mortgage loans held for sale	1,806
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	0	0
Mortgage loans held for sale	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	0	0
Mortgage loans held for sale	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	7,808	$ 2,536
Mortgage loans held for sale	$ 1,806