Other Assets - Bank-Owned Life Insurance and Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Other Intangible Assets
Noncash exchange of certain BOLI	$ 81,600	$ 115,000	$ 81,700	$ 180,300
Gain or loss recognized as part of exchange	0	0	0	0
Unpaid principal amount of consumer loans serviced for others	1,200,000		1,200,000		$ 1,300,000
Contractually specified fees, late charges, and ancillary fees	700	800	1,500	1,600
Amortization of mortgage servicing rights	151	$ 234	354	$ 497
Servicing Contracts
Estimated future amortization expenses for MSRs over the next five years
Under one year	692		692
One to two years	614		614
Two to three years	545		545
Three to four years	484		484
Four to five years	430		430
Mortgage servicing rights
Gross carrying amount	70,006		70,006		69,903
Less: accumulated amortization	65,178		65,178		64,825
Net carrying value	$ 4,828		$ 4,828		$ 5,078