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Mortgage Banking - Activity in Mortgage Servicing Rights (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Servicing Asset at Fair Value, Amount [Roll Forward]            
Balance at beginning of period     $ 20,824 $ 20,824 $ 16,220 $ 13,660
Addition of servicing rights       708 2,286 5,153
Settlement of sale of GNMA MSR $ (1,800) $ (1,800) $ (1,800) (1,806) 0 0
Valuation adjustment, net of amortization       (4,089) 1,219 (2,593)
Balance at end of period       15,637 20,824 16,220
Servicing acquired in BTH merger            
Servicing Asset at Fair Value, Amount [Roll Forward]            
Addition of servicing rights       $ 0 $ 1,099 $ 0