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Loans, Nonaccrual Loans Segregated by Class of Loans and Loan Portfolio Aging Analysis, Segregated by Class (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans segregated by class of loans |  | $ 16,498 | $ 16,623
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 38,130 | 42,089
Current |  | 2,931,735 | 2,896,282
Total Loans |  | 2,969,865 | 2,938,371
90+ and Accruing | [1] | 8,583 | 10,847
Minimum threshold amount of loans requiring performance bond |  | 500 |
30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 9,398 | 10,242
60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 7,221 | 7,324
90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | $ 21,511 | 24,523
Equipment Lease Financing [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Financing percentage requested for underwriting loans |  | 100.00% |
Commercial [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Loans |  | $ 1,528,712 | 1,508,097
Commercial [Member] | Construction [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans segregated by class of loans |  | 1,684 | 1,912
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 1,880 | 1,962
Current |  | 67,897 | 65,036
Total Loans |  | 69,777 | 66,998
90+ and Accruing | [1] | 24 | 28
Commercial [Member] | Construction [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 60 | 22
Commercial [Member] | Construction [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 112 | 0
Commercial [Member] | Construction [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 1,708 | 1,940
Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans segregated by class of loans |  | 5,668 | 6,326
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 12,680 | 11,358
Current |  | 1,090,306 | 1,074,070
Total Loans |  | 1,102,986 | 1,085,428
90+ and Accruing | [1] | 3,135 | 3,015
Commercial [Member] | Real Estate [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 3,905 | 2,033
Commercial [Member] | Real Estate [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 793 | 478
Commercial [Member] | Real Estate [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 7,982 | 8,847
Commercial [Member] | Equipment Lease Financing [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 138 | 0
Current |  | 5,305 | 5,512
Total Loans |  | 5,443 | 5,512
90+ and Accruing | [1] | 0 | 0
Commercial [Member] | Equipment Lease Financing [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 1 | 0
Commercial [Member] | Equipment Lease Financing [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 137 | 0
Commercial [Member] | Equipment Lease Financing [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 0 | 0
Commercial [Member] | Other [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans segregated by class of loans |  | 1,466 | 1,559
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 2,236 | 2,354
Current |  | 348,270 | 347,805
Total Loans |  | 350,506 | 350,159
90+ and Accruing | [1] | 271 | 141
Commercial [Member] | Other [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 327 | 997
Commercial [Member] | Other [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 601 | 122
Commercial [Member] | Other [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 1,308 | 1,235
Residential [Member] | Construction [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans segregated by class of loans |  | 189 | 11
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 465 | 901
Current |  | 55,281 | 57,065
Total Loans |  | 55,746 | 57,966
90+ and Accruing | [1] | 34 | 152
Residential [Member] | Construction [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 184 | 707
Residential [Member] | Construction [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 58 | 42
Residential [Member] | Construction [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 223 | 152
Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans segregated by class of loans |  | 6,887 | 6,260
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 15,040 | 17,466
Current |  | 689,515 | 685,503
Total Loans |  | 704,555 | 702,969
90+ and Accruing | [1] | 4,323 | 6,295
Residential [Member] | Real Estate [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 1,244 | 1,493
Residential [Member] | Real Estate [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 4,700 | 5,278
Residential [Member] | Real Estate [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 9,096 | 10,695
Residential [Member] | Home Equity [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans segregated by class of loans |  | 604 | 555
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 1,701 | 2,022
Current |  | 89,629 | 89,489
Total Loans |  | 91,330 | 91,511
90+ and Accruing | [1] | 332 | 467
Residential [Member] | Home Equity [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 855 | 829
Residential [Member] | Home Equity [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 116 | 288
Residential [Member] | Home Equity [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 730 | 905
Consumer [Member] | Consumer Direct [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Nonaccrual loans segregated by class of loans |  | 0 | 0
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 917 | 1,206
Current |  | 131,284 | 131,887
Total Loans |  | 132,201 | 133,093
90+ and Accruing | [1] | 49 | 68
Consumer [Member] | Consumer Direct [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 718 | 873
Consumer [Member] | Consumer Direct [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 150 | 265
Consumer [Member] | Consumer Direct [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 49 | 68
Consumer [Member] | Consumer Indirect [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 3,073 | 4,820
Current |  | 454,248 | 439,915
Total Loans |  | 457,321 | 444,735
90+ and Accruing | [1] | 415 | 681
Consumer [Member] | Consumer Indirect [Member] | 30-59 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 2,104 | 3,288
Consumer [Member] | Consumer Indirect [Member] | 60-89 Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | 554 | 851
Consumer [Member] | Consumer Indirect [Member] | 90+ Days Past Due [Member] |  |  |
Bank's Loan portfolio aging analysis, segregated by class [Abstract] |  |  |
Total Past Due |  | $ 415 | $ 681
[1] | 90+ and Accruing are also included in 90+ Days Past Due column.

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