Mortgage Servicing Rights - Schedule of Servicing Income and Expense Included in Mortgage Banking Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Servicing income:
Servicing income	$ 7,363	$ 8,104	$ 22,717	$ 23,499
Contractually Specified Servicing Fee Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Mortgage banking income, service charges on deposit accounts, investment services and trust income, ATM and interchange fees, Other expense	Mortgage banking income, service charges on deposit accounts, investment services and trust income, ATM and interchange fees, Other expense	Mortgage banking income, service charges on deposit accounts, investment services and trust income, ATM and interchange fees, Other expense	Mortgage banking income, service charges on deposit accounts, investment services and trust income, ATM and interchange fees, Other expense
Change in fair value of mortgage servicing rights	$ 4,204	$ 8,296	$ (1,789)	$ 36,392
Change in fair value of derivative hedging instruments	(7,928)	(12,641)	(9,564)	(41,636)
Servicing income	3,639	3,759	11,364	18,255
Servicing expenses	1,953	1,923	6,167	7,848
Net servicing income (loss)	$ 1,686	$ 1,836	$ 5,197	$ 10,407