Loans and Leases (Past Due Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Total past due	$ 5,040	$ 10,237
Current	748,370	717,827
Total loans	753,410	728,064
Recorded investment past due >=90 days and accruing		1
Non-accrual loans	3,674	4,298
Unearned lease revenue	903	1,028
Deferred loan costs	3,000	2,600
30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	681	4,151
60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	685	1,787
Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due	3,674	4,299
Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Total past due	540	2,002
Current	122,054	124,882
Total loans	122,594	126,884
Non-accrual loans	336	156
Commercial And Industrial [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	33	1,711
Commercial And Industrial [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	171	135
Commercial And Industrial [Member] | Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due	336	156
Commercial Real Estate: Non-Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Total past due	580	973
Current	99,221	94,542
Total loans	99,801	95,515
Non-accrual loans	510	472
Commercial Real Estate: Non-Owner Occupied [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due		388
Commercial Real Estate: Non-Owner Occupied [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	70	113
Commercial Real Estate: Non-Owner Occupied [Member] | Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due	510	472
Commercial Real Estate: Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Total past due	1,716	2,410
Current	128,842	121,682
Total loans	130,558	124,092
Non-accrual loans	1,447	1,634
Commercial Real Estate: Owner Occupied [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	180	263
Commercial Real Estate: Owner Occupied [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	89	513
Commercial Real Estate: Owner Occupied [Member] | Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due	1,447	1,634
Commercial Real Estate: Construction [Member]
Financing Receivable, Past Due [Line Items]
Current	4,654	6,761
Total loans	4,654	6,761
Consumer: Home Equity Installment [Member]
Financing Receivable, Past Due [Line Items]
Total past due	70	695
Current	36,561	32,034
Total loans	36,631	32,729
Non-accrual loans	65	463
Consumer: Home Equity Installment [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due		50
Consumer: Home Equity Installment [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	5	182
Consumer: Home Equity Installment [Member] | Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due	65	463
Consumer: Home Equity Line Of Credit [Member]
Financing Receivable, Past Due [Line Items]
Total past due	343	934
Current	46,939	51,583
Total loans	47,282	52,517
Non-accrual loans	294	34
Consumer: Home Equity Line Of Credit [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	49	725
Consumer: Home Equity Line Of Credit [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due		175
Consumer: Home Equity Line Of Credit [Member] | Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due	294	34
Consumer: Auto Loans [Member]
Financing Receivable, Past Due [Line Items]
Total past due	378	373
Current	105,492	105,203
Total loans	105,870	105,576
Non-accrual loans	16	25
Consumer: Auto Loans [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	316	262
Consumer: Auto Loans [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	46	86
Consumer: Auto Loans [Member] | Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due	16	25
Consumer: Direct Finance Leases [Member]
Financing Receivable, Past Due [Line Items]
Total past due	138	116
Current	15,314	15,860
Total loans	15,452	15,976
Consumer: Direct Finance Leases [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	59	116
Consumer: Direct Finance Leases [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	79
Consumer: Other [Member]
Financing Receivable, Past Due [Line Items]
Total past due	16	90
Current	5,618	6,224
Total loans	5,634	6,314
Recorded investment past due >=90 days and accruing		1
Consumer: Other [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	15	79
Consumer: Other [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	1	10
Consumer: Other [Member] | Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due		1
Residential: Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total past due	1,259	2,644
Current	165,905	143,307
Total loans	167,164	145,951
Non-accrual loans	1,006	1,514
Residential: Real Estate [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	29	557
Residential: Real Estate [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total past due	224	573
Residential: Real Estate [Member] | Past Due 90 Days Or More [Member]
Financing Receivable, Past Due [Line Items]
Total past due	1,006	1,514
Residential: Construction [Member]
Financing Receivable, Past Due [Line Items]
Current	17,770	15,749
Total loans	$ 17,770	$ 15,749