Loans (Aging Of Past Due Loans) (Details) - USD ($) $ in Thousands		Sep. 30, 2022		Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		$ 14,778		$ 13,465
Loan balance		7,103,246		6,871,122
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		16,930	[1]	21,070	[2]
Impaired Financing Receivable, Recorded Investment, Nonaccrual loans which are current in regards to contractual P&I payments		28,500		53,300
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		7,071,538		6,836,587
Construction Real Estate Commercial [Domain]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		158
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		200,580		214,561
Loan balance		200,580		214,561
Construction Real Estate Commercial [Domain] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		200,422		214,561
Residential Real Estate Commercial [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		9		283
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		532,921		533,802
Loan balance		532,921		533,802
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		362	[1]	438	[2]
Residential Real Estate Commercial [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		532,550		533,081
Residential Real Estate - Mortgage [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		6,986		6,170
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,057,204		1,033,658
Loan balance		1,057,204		1,033,658
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		5,450	[1]	5,933	[2]
Residential Real Estate - Mortgage [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,044,768		1,021,555
Residential Real Estate - HELOC [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		282		565
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		166,989		165,605
Loan balance		166,989		165,605
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		631	[1]	1,011	[2]
Residential Real Estate - HELOC [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		166,076		164,029
Residential Real Estate - Installment [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		46		49
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,251		5,642
Loan balance		4,251		5,642
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		7	[1]	31	[2]
Residential Real Estate - Installment [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,198		5,562
PPP loans receivable [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		780		242
Loan balance		5,715		74,420
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		8		793
PPP loans receivable [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,927		73,385
Bank Overdrafts
Financing Receivable, Past Due [Line Items]
Loan balance		1,957		1,127
Bank Overdrafts | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,957		1,127
Construction Real Estate Retail
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days				346
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		111,127		107,225
Loan balance		111,127		107,225
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans	[2]			660
Construction Real Estate Retail | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		111,127		106,219
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		574		65
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,790,801		1,801,792
Loan balance		1,790,801		1,801,792
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		516	[1]	1,461	[2]
Commercial Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,789,711		1,800,266
Finance Leases Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		38		60
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		19,871		20,532
Loan balance		19,871		20,532
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		166		526	[2]
Finance Leases Portfolio Segment [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		19,667		19,946
PPP loans receivable [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		5,715		74,420
GFSC loans
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		46		153
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		452		1,793
Loan balance		452		1,793
Financing Receivable Recorded Investment Ninety Days Or More Past Due And Accruing Plus Past Due Nonaccrual Loans		10		52
GFSC loans | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		396		1,588
Check loans
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		5		10
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,144		2,093
Loan balance		2,144		2,093
Check loans | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,139		2,083
Bank Overdrafts
Financing Receivable, Past Due [Line Items]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		$ 1,957		$ 1,127

[1] 1) Includes an aggregate of $790,000 of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans.(2) Includes an aggregate of $28.5 million of nonaccrual loans which were current in regards to contractual principal and interest payments

[2] 1) Includes an aggregate of $1.6 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans.(2) Includes an aggregate of $53.3 million of nonaccrual loans which were current in regards to contractual principal and interest payments.