Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage servicing rights	$ 78,799	$ 80,744	$ 76,701	$ 81,036	$ 78,390	$ 74,097
Fair Value, Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Available-for-sale securities	496,811		516,757
Loans held-for-sale	72,247		54,212
Mortgage servicing rights	78,799		76,701
Derivative financial instruments - assets	27,311		35,073
Derivative financial instruments - liabilities	(17,531)		(20,475)
Total	657,637		662,268
Fair Value, Recurring | Level 1
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Available-for-sale securities	40,648		54,234
Loans held-for-sale	0		0
Mortgage servicing rights	0		0
Derivative financial instruments - assets	0		0
Derivative financial instruments - liabilities	0		0
Total	40,648		54,234
Fair Value, Recurring | Level 2
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Available-for-sale securities	456,163		462,523
Loans held-for-sale	72,247		54,212
Mortgage servicing rights	0		0
Derivative financial instruments - assets	27,311		35,073
Derivative financial instruments - liabilities	(17,531)		(20,475)
Total	538,190		531,333
Fair Value, Recurring | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Available-for-sale securities	0		0
Loans held-for-sale	0		0
Mortgage servicing rights	78,799		76,701
Derivative financial instruments - assets	0		0
Derivative financial instruments - liabilities	0		0
Total	$ 78,799		$ 76,701