Loans (Aging Of The Recorded Investment In Past Due Loans And Leases) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 2,911,437	$ 2,876,147	$ 2,873,525
Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	98		416
Total Loans	110,767		88,102
Loans and Leases Receivable, Net of Deferred Income	110,865		88,518
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	12,713		8,214
Total Loans	885,104		825,024
Loans and Leases Receivable, Net of Deferred Income	897,817		833,238
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	646,881		658,657
Loans and Leases Receivable, Net of Deferred Income	654,530		662,993
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	7,649		4,336
Loans and Leases Receivable, Net of Deferred Income	654,530		662,993
Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	16,143		19,328
Total Loans	609,223		642,148
Loans and Leases Receivable, Net of Deferred Income	625,366		661,476
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	1,948		2,185
Total Loans	126,063		130,519
Loans and Leases Receivable, Net of Deferred Income	128,011		132,704
Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	3,878		4,658
Total Loans	414,188		412,527
Loans and Leases Receivable, Net of Deferred Income	418,066		417,185
Consumer, Other Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	692		848
Total Loans	75,480		75,685
Loans and Leases Receivable, Net of Deferred Income	76,172		76,533
Bank Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	0		0
Total Loans	610		878
Loans and Leases Receivable, Net of Deferred Income	610		878
Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	43,121		39,985
Total Loans	2,868,316		2,833,540
Loans and Leases Receivable, Net of Deferred Income	2,911,437		2,873,525
Originated Loans | Bank Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	610
30 - 59 days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	0		5
30 - 59 days | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	3,707		376
30 - 59 days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	2,135		2,780
30 - 59 days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	10,790		10,538
30 - 59 days | Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	626		642
30 - 59 days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	3,046		3,574
30 - 59 days | Consumer, Other Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	457		619
30 - 59 days | Bank Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	0		0
30 - 59 days | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	20,761		18,534
60 - 89 days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	4		0
60 - 89 days | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	77		337
60 - 89 days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	42		312
60 - 89 days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	886		2,918
60 - 89 days | Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	267		510
60 - 89 days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	502		714
60 - 89 days | Consumer, Other Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	84		117
60 - 89 days | Bank Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	0		0
60 - 89 days | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	1,862		4,908
90 + Days | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	94		411
90 + Days | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	8,929		7,501
90 + Days | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	5,472		1,244
90 + Days | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	4,467		5,872
90 + Days | Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	1,055		1,033
90 + Days | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	330		370
90 + Days | Consumer, Other Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	151		112
90 + Days | Bank Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	0		0
90 + Days | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due	$ 20,498		$ 16,543