Loans (Narrative) (Details) - USD ($) $ in Thousands		Jun. 30, 2024	Dec. 31, 2023
Accrued interest receivable on loans		$ 23,500	$ 22,900
Total loans	[1]	5,629,102	5,647,706
Nonaccrual loans included in past due loans		8,400	6,900
Nonaccrual loans with no ACL		20,431	23,643
Nonaccrual loans current on payment		22,100	37,700
Residential loans in process of foreclosure		3,700	960
Individually analyzed loans		20,400	34,600
Asset Pledged as Collateral
Total loans		$ 3,600,000	$ 3,400,000

[1] Includes net unamortized loan origination costs of $13.3 million and $13.0 million, respectively, at June 30, 2024 and December 31, 2023 and net unamortized premiums on loans purchased from and serviced by other financial institutions of $262 thousand and $286 thousand, respectively, at June 30, 2024 and December 31, 2023.