Allowance for Credit Losses on Loans (Allowance for Loan Losses Rollforward Analysis) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	$ 37,236
Charge-offs	(84)	$ (2,522)	$ (14,735)
Provision for credit losses	4,000	1,200
Allowance, Ending Balance	41,126		37,236
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	19,766	26,485	26,485
Charge-offs	0	(2,450)	(5,715)
Recoveries	0	200
Provision for credit losses	4,265	972
Allowance, Ending Balance	24,031	25,207	19,766
Commercial & industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	9,750	7,277	7,277
Charge-offs	(17)	(7)	(8,693)
Recoveries	59	4
Provision for credit losses	(145)	382
Allowance, Ending Balance	9,647	7,656	9,750
Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	29,516	33,762	33,762
Charge-offs	(17)	(2,457)
Recoveries	59	204
Provision for credit losses	4,120	1,354
Allowance, Ending Balance	33,678	32,863	29,516
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	6,270	6,832	6,832
Charge-offs	0	0	0
Recoveries	1	0
Provision for credit losses	(268)	(56)
Allowance, Ending Balance	6,003	6,776	6,270
Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	1,186	1,031	1,031
Charge-offs	0	0	0
Recoveries	1	1
Provision for credit losses	7	25
Allowance, Ending Balance	1,194	1,057	1,186
Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	264	335	335
Charge-offs	(67)	(65)	(327)
Recoveries	13	13
Provision for credit losses	41	77
Allowance, Ending Balance	251	360	264
Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	1,450	1,366	1,366
Charge-offs	(67)	(65)
Recoveries	14	14
Provision for credit losses	48	102
Allowance, Ending Balance	1,445	1,417	1,450
Financing Receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance, Beginning Balance	37,236	41,960	41,960
Charge-offs	(84)	(2,522)
Recoveries	74	218
Provision for credit losses	3,900	1,400
Allowance, Ending Balance	$ 41,126	$ 41,056	$ 37,236