Loans (Past Due Financing Receivables) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Financing Receivable, Impaired [Line Items]
Past Due	$ 12,646	$ 12,244
Total Loan Receivables	1,387,186	1,346,922	$ 1,290,415
31 - 60 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	364	305
61 - 89 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	1,823	829
90 or Greater Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	10,459	11,110
Commercial Equipment Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Past Due	286	1,284
Total Loan Receivables	50,466	50,202	47,418
Commercial Equipment Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	30	25
Commercial Equipment Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	10	29
Commercial Equipment Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	246	1,230
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Past Due	1	5
Total Loan Receivables	967	751	801
Consumer Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	1	1
Consumer Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due		4
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Past Due	819	866
Total Loan Receivables	67,617	71,680	57,519
Commercial Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	0
Commercial Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	0
Commercial Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	819	866
Home Equity And Second Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Past Due	440	413
Total Loan Receivables	35,866	35,561	37,026
Home Equity And Second Mortgage Loans [Member] | 31 - 60 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	24	266
Home Equity And Second Mortgage Loans [Member] | 61 - 89 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	106
Home Equity And Second Mortgage Loans [Member] | 90 or Greater Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	310	147
Construction And Land Development Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Total Loan Receivables	35,662	29,705	28,647
Residential Rentals Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Past Due	321	313
Total Loan Receivables	121,990	124,298	127,469
Residential Rentals Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	0	13
Residential Rentals Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	321	53
Residential Rentals Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	0	247
Residential First Mortgages Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Past Due	474	212
Total Loan Receivables	156,670	156,709	163,090
Residential First Mortgages Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	328	66
Residential First Mortgages Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	146	146
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Past Due	10,305	9,151
Total Loan Receivables	917,948	878,016	828,445
Commercial Real Estate Portfolio Segment [Member] | 31 - 60 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	309
Commercial Real Estate Portfolio Segment [Member] | 61 - 89 Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	1,058	677
Commercial Real Estate Portfolio Segment [Member] | 90 or Greater Days [Member]
Financing Receivable, Impaired [Line Items]
Past Due	8,938	8,474
PCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Current	2,772	3,220
Total Loan Receivables	2,772	3,220	3,838
PCI Loans [Member] | Home Equity And Second Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Current	269	72
Total Loan Receivables	269	72	319
PCI Loans [Member] | Construction And Land Development Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Total Loan Receivables			272
PCI Loans [Member] | Residential Rentals Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	327	897
Total Loan Receivables	327	897	1,274
PCI Loans [Member] | Residential First Mortgages Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	451	466
Total Loan Receivables	451	466	470
PCI Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	1,725	1,785
Total Loan Receivables	1,725	1,785	$ 1,503
All Other Loans [Member]
Financing Receivable, Impaired [Line Items]
Current	1,371,768	1,331,458
Total Loan Receivables	1,384,414	1,343,702
All Other Loans [Member] | Commercial Equipment Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	50,180	48,918
Total Loan Receivables	50,466	50,202
All Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	966	746
Total Loan Receivables	967	751
All Other Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	66,798	70,814
Total Loan Receivables	67,617	71,680
All Other Loans [Member] | Home Equity And Second Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Current	35,157	35,076
All Other Loans [Member] | Construction And Land Development Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	35,662	29,705
Total Loan Receivables	35,662	29,705
All Other Loans [Member] | Residential Rentals Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	121,342	123,088
Total Loan Receivables	121,663	123,401
All Other Loans [Member] | Residential First Mortgages Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	155,745	156,031
Total Loan Receivables	156,219	156,243
All Other Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Current	905,918	867,080
Total Loan Receivables	$ 916,223	$ 876,231