Loans (Narrative) (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Carrying value of Payment Protection Program loans		$ 1,100	$ 38,000
Net unamortized loan origination costs		11,600	6,700
Net unamortized premiums on purchased loans		318	414
Accrued interest receivable		17,600	10,300
Total loans	[1]	5,110,139	4,272,925
Nonaccrual loans included in past due loans		7,200	9,400
Nonaccrual loans, no ACL deemed necessary		6,500	4,200
Nonaccrual loans current on payment		5,700	4,800
Residential loans in process of foreclosure		2,900	1,500
Individually analyzed loans		10,000
Asset Pledged as Collateral
Total loans		2,400,000	2,200,000
Collateral Dependent Individually Analyzed [Member]
Total loans		$ 8,455	$ 14,406

[1] Includes net unamortized loan origination costs of $11.6 million and $6.7 million, respectively, at December 31, 2022 and 2021 and net unamortized premiums on loans purchased from and serviced by other financial institutions of $318 thousand and $414 thousand, respectively, at December 31, 2022 and 2021.