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Loans and Allowance for Loan Losses (Tables) | 3 Months Ended
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Mar. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items] |
Summary of composition of loan portfolio |
| March 31, 2017 |  |  | December 31, 2016
(dollars in thousands) |  |  | Amount |  |  | % of Total |  |  |  | Amount |  |  | % of Total
Commercial |  |  |  |  |  |  |  |  |  |  |  |  |  |
Owner occupied RE |  | $ | 288,300 |  |  | 23.7 | % |  | $ | 285,938 |  |  | 24.6 | %
Non-owner occupied RE |  |  | 258,449 |  |  | 21.2 | % |  |  | 239,574 |  |  | 20.6 | %
Construction |  |  | 36,889 |  |  | 3.0 | % |  |  | 33,393 |  |  | 2.9 | %
Business |  |  | 208,590 |  |  | 17.1 | % |  |  | 202,552 |  |  | 17.4 | %
Total commercial loans |  |  | 792,228 |  |  | 65.0 | % |  |  | 761,457 |  |  | 65.5 | %
Consumer |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate |  |  | 230,695 |  |  | 18.9 | % |  |  | 215,588 |  |  | 18.5 | %
Home equity |  |  | 143,673 |  |  | 11.8 | % |  |  | 137,105 |  |  | 11.8 | %
Construction |  |  | 31,535 |  |  | 2.6 | % |  |  | 31,922 |  |  | 2.7 | %
Other |  |  | 20,549 |  |  | 1.7 | % |  |  | 17,572 |  |  | 1.5 | %
Total consumer loans |  |  | 426,452 |  |  | 35.0 | % |  |  | 402,187 |  |  | 34.5 | %
Total gross loans, net of deferred fees |  |  | 1,218,680 |  |  | 100.0 | % |  |  | 1,163,644 |  |  | 100.0 | %
Less—allowance for loan losses |  |  | (15,287 | ) |  |  |  |  |  | (14,855 | ) |  |  |
Total loans, net |  | $ | 1,203,393 |  |  |  |  |  | $ | 1,148,789 |  |  |  |
Summary of loan maturity distribution by type and related interest rate |
| March 31, 2017
|  |  |  |  | After one |  |  |  |  |
|  |  | One year |  | but within |  | After five |  |  |
(dollars in thousands) |  |  | or less |  | five years |  | years |  |  | Total
Commercial |  |  |  |  |  |  |  |  |  |
Owner occupied RE |  | $ | 22,336 |  | 149,371 |  | 116,593 |  |  | 288,300
Non-owner occupied RE |  |  | 33,669 |  | 140,116 |  | 84,664 |  |  | 258,449
Construction |  |  | 9,077 |  | 11,358 |  | 16,454 |  |  | 36,889
Business |  |  | 62,790 |  | 106,729 |  | 39,071 |  |  | 208,590
Total commercial loans |  |  | 127,872 |  | 407,574 |  | 256,782 |  |  | 792,228
Consumer |  |  |  |  |  |  |  |  |  |
Real estate |  |  | 28,754 |  | 52,367 |  | 149,574 |  |  | 230,695
Home equity |  |  | 7,391 |  | 29,494 |  | 106,788 |  |  | 143,673
Construction |  |  | 15,762 |  | 606 |  | 15,167 |  |  | 31,535
Other |  |  | 6,600 |  | 9,629 |  | 4,320 |  |  | 20,549
Total consumer loans |  |  | 58,507 |  | 92,096 |  | 275,849 |  |  | 426,452
Total gross loans, net of deferred fees |  | $ | 186,379 |  | 499,670 |  | 532,631 |  |  | 1,218,680
Loans maturing after one year with: |  |  |  |  |  |  |  |  |  |
Fixed interest rates |  |  |  |  |  |  |  |  | $ | 778,861
Floating interest rates |  |  |  |  |  |  |  |  |  | 253,440
| December 31, 2016
|  |  |  |  | After one |  |  |  |  |
|  |  | One year |  | but within |  | After five |  |  |
|  |  | or less |  | five years |  | years |  |  | Total
Commercial |  |  |  |  |  |  |  |  |  |
Owner occupied RE |  | $ | 26,062 |  | 145,419 |  | 114,457 |  |  | 285,938
Non-owner occupied RE |  |  | 34,685 |  | 142,261 |  | 62,628 |  |  | 239,574
Construction |  |  | 5,881 |  | 9,558 |  | 17,954 |  |  | 33,393
Business |  |  | 66,361 |  | 99,255 |  | 36,936 |  |  | 202,552
Total commercial loans |  |  | 132,989 |  | 396,493 |  | 231,975 |  |  | 761,457
Consumer |  |  |  |  |  |  |  |  |  |
Real estate |  |  | 26,342 |  | 49,832 |  | 139,414 |  |  | 215,588
Home equity |  |  | 7,142 |  | 29,041 |  | 100,922 |  |  | 137,105
Construction |  |  | 14,103 |  | 627 |  | 17,192 |  |  | 31,922
Other |  |  | 5,049 |  | 9,305 |  | 3,218 |  |  | 17,572
Total consumer |  |  | 52,636 |  | 88,805 |  | 260,746 |  |  | 402,187
Total gross loan, net of deferred fees |  | $ | 185,625 |  | 485,298 |  | 492,721 |  |  | 1,163,644
Loans maturing after one year with: |  |  |  |  |  |  |  |  |  |
Fixed interest rates |  |  |  |  |  |  |  |  | $ | 733,892
Floating interest rates |  |  |  |  |  |  |  |  |  | 244,127
Summary of nonperforming assets, including nonaccruing TDRs |
(dollars in thousands) |  | March 31, 2017 |  | December 31, 2016
Commercial |  |  |  |  |  |  |
Owner occupied RE |  | $ | 266 |  |  | 276 |
Non-owner occupied RE |  |  | 2,514 |  |  | 2,711 |
Construction |  |  | - |  |  | - |
Business |  |  | 1,616 |  |  | 686 |
Consumer |  |  |  |  |  |  |
Real estate |  |  | 541 |  |  | 550 |
Home equity |  |  | 257 |  |  | 256 |
Construction |  |  | - |  |  | - |
Other |  |  | 5 |  |  | 13 |
Nonaccruing troubled debt restructurings |  |  | 979 |  |  | 990 |
Total nonaccrual loans, including nonaccruing TDRs |  |  | 6,178 |  |  | 5,482 |
Other real estate owned |  |  | 669 |  |  | 639 |
Total nonperforming assets |  | $ | 6,847 |  |  | 6,121 |
Nonperforming assets as a percentage of: |  |  |  |  |  |  |
Total assets |  |  | 0.47 | % |  | 0.46 | %
Gross loans |  |  | 0.56 | % |  | 0.53 | %
Total loans over 90 days past due |  |  | 1,688 |  |  | 1,984 |
Loans over 90 days past due and still accruing |  |  | - |  |  | - |
Accruing troubled debt restructurings |  | $ | 5,795 |  |  | 5,675 |
Summary of key information for impaired loans |
|  |  |  | March 31, 2017
|  |  |  |  | Recorded investment |  |
|  |  |  |  |  |  | Impaired loans |  |
|  | Unpaid |  |  |  | with related |  | Related
|  | Principal |  | Impaired |  | allowance for |  | allowance for
(dollars in thousands) |  | Balance |  | loans |  | loan losses |  | loan losses
Commercial |  |  |  |  |  |  |  |  |
Owner occupied RE |  | $ | 2,271 |  | 2,220 |  | 2,220 |  | 420
Non-owner occupied RE |  |  | 7,226 |  | 3,823 |  | 1,503 |  | 410
Construction |  |  | - |  | - |  | - |  | -
Business |  |  | 4,353 |  | 3,665 |  | 2,943 |  | 1,160
Total commercial |  |  | 13,850 |  | 9,708 |  | 6,666 |  | 1,990
Consumer |  |  |  |  |  |  |  |  |
Real estate |  |  | 1,844 |  | 1,828 |  | 1,642 |  | 605
Home equity |  |  | 262 |  | 257 |  | 123 |  | 61
Construction |  |  | - |  | - |  | - |  | -
Other |  |  | 181 |  | 181 |  | 181 |  | 93
Total consumer |  |  | 2,287 |  | 2,266 |  | 1,946 |  | 759
Total |  | $ | 16,137 |  | 11,974 |  | 8,612 |  | 2,749
|  |  |  | December 31, 2016
|  |  |  | Recorded investment |  |
|  |  |  |  |  |  | Impaired loans |  |
|  | Unpaid |  |  |  | with related |  | Related
|  | Principal |  | Impaired |  | allowance for |  | allowance for
|  | Balance |  | loans |  | loan losses |  | loan losses
Commercial |  |  |  |  |  |  |  |  |
Owner occupied RE |  | $ | 2,284 |  | 2,243 |  | 2,224 |  | 263
Non-owner occupied RE |  |  | 7,238 |  | 4,031 |  | 1,638 |  | 457
Construction |  |  | - |  | - |  | - |  | -
Business |  |  | 3,699 |  | 2,593 |  | 1,610 |  | 1,154
Total commercial |  |  | 13,221 |  | 8,867 |  | 5,472 |  | 1,874
Consumer |  |  |  |  |  |  |  |  |
Real estate |  |  | 1,853 |  | 1,843 |  | 1,843 |  | 682
Home equity |  |  | 207 |  | 257 |  | - |  | -
Construction |  |  | - |  | - |  | - |  | -
Other |  |  | 261 |  | 190 |  | 177 |  | 88
Total consumer |  |  | 2,321 |  | 2,290 |  | 2,020 |  | 770
Total |  | $ | 15,542 |  | 11,157 |  | 7,492 |  | 2,644
Summary of average recorded investment and interest income recognized on impaired loans |
| Three months ended |  |  | Three months ended |  |  |  |  | Year ended
| March 31, 2017 |  | March 31, 2016 |  |  | December 31, 2016
|  | Average |  | Recognized |  |  | Average |  | Recognized |  |  | Average |  | Recognized
|  | recorded |  | interest |  |  | recorded |  | interest |  |  | recorded |  | interest
(dollars in thousands) |  | investment |  | income |  |  | investment |  | income |  |  | investment |  | income
Commercial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Owner occupied RE |  | $ | 2,232 |  | 28 |  | $ | 615 |  | 7 |  |  | 2,263 |  | 112
Non-owner occupied RE |  |  | 3,927 |  | 29 |  |  | 5,731 |  | 48 |  |  | 4,106 |  | 200
Construction |  |  | - |  | - |  |  | 1,778 |  | 30 |  |  | - |  | -
Business |  |  | 3,675 |  | 40 |  |  | 2,760 |  | 30 |  |  | 2,873 |  | 135
Total commercial |  |  | 9,834 |  | 97 |  |  | 10,884 |  | 115 |  |  | 9,242 |  | 447
Consumer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate |  |  | 1,836 |  | 16 |  |  | 1,119 |  | 9 |  |  | 1,854 |  | 81
Home equity |  |  | 256 |  | 1 |  |  | 195 |  | 2 |  |  | 257 |  | 2
Construction |  |  | - |  | - |  |  | - |  | - |  |  | - |  | -
Other |  |  | 182 |  | - |  |  | 257 |  | - |  |  | 203 |  | 6
Total consumer |  |  | 2,274 |  | 17 |  |  | 1,571 |  | 11 |  |  | 2,314 |  | 89
Total |  | $ | 12,108 |  | 114 |  | $ | 12,455 |  | 126 |  |  | 11,556 |  | 536
Summary of allowance for loan losses by commercial and consumer portfolio segments |
|  | Three months ended March 31, 2017
|  | Commercial |  |  | Consumer
|  | Owner |  | Non-owner |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | occupied |  | occupied |  |  |  |  |  |  | Real |  | Home |  |  |  |  |  |  |  |
(dollars in thousands) |  | RE |  | RE |  | Construction |  | Business |  | Estate |  | equity |  | Construction |  | Other |  | Total
Balance, beginning of period |  | $ | 2,843 |  |  | 2,778 |  |  | 295 |  | 4,123 |  |  | 2,780 |  |  | 1,475 |  | 252 |  | 309 |  |  | 14,855 |
Provision for loan losses |  |  | 209 |  |  | 369 |  |  | 39 |  | (321 | ) |  | (40 | ) |  | 143 |  | 37 |  | 64 |  |  | 500 |
Loan charge-offs |  |  | - |  |  | (181 | ) |  | - |  | (9 | ) |  | - |  |  | - |  | - |  | - |  |  | (190 | )
Loan recoveries |  |  | - |  |  | 1 |  |  | - |  | 30 |  |  | 90 |  |  | 1 |  | - |  | - |  |  | 122 |
Net loan charge-offs |  |  | - |  |  | (180 | ) |  | - |  | 21 |  |  | 90 |  |  | 1 |  | - |  | - |  |  | (68 | )
Balance, end of period |  | $ | 3,052 |  |  | 2,967 |  |  | 334 |  | 3,823 |  |  | 2,830 |  |  | 1,619 |  | 289 |  | 373 |  |  | 15,287 |
Net charge-offs to average loans (annualized) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.02% |
Allowance for loan losses to gross loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.25% |
Allowance for loan losses to nonperforming loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 247.43% |
|  | Three months ended March 31, 2016
|  | Commercial |  | Consumer
|  | Owner |  | Non-owner |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | occupied |  | occupied |  |  |  |  |  |  | Real |  | Home |  |  |  |  |  |  |  |
(dollars in thousands) |  | RE |  | RE |  | Construction |  | Business |  | Estate |  | equity |  | Construction |  | Other |  | Total
Balance, beginning of period |  | $ | 2,347 |  |  | 3,187 |  |  | 338 |  | 3,800 |  |  | 2,070 |  |  | 1,202 |  | 313 |  | 372 |  |  | 13,629 |
Provision for loan losses |  |  | 151 |  |  | 122 |  |  | 104 |  | (158 | ) |  | 248 |  |  | 61 |  | 38 |  | 59 |  |  | 625 |
Loan charge-offs |  |  | (5 | ) |  | (75 | ) |  | - |  | (36 | ) |  | (187 | ) |  | - |  | - |  | (91 | ) |  | (394 | )
Loan recoveries |  |  | - |  |  | 2 |  |  | - |  | 33 |  |  | - |  |  | - |  | - |  | 3 |  |  | 38 |
Net loan charge-offs |  |  | (5 | ) |  | (73 | ) |  | - |  | (3 | ) |  | (187 | ) |  | - |  | - |  | (88 | ) |  | (356 | )
Balance, end of period |  | $ | 2,493 |  |  | 3,236 |  |  | 442 |  | 3,639 |  |  | 2,131 |  |  | 1,263 |  | 351 |  | 343 |  |  | 13,898 |
Net charge-offs to average loans (annualized) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.14% |
Allowance for loan losses to gross loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.34% |
Allowance for loan losses to nonperforming loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 224.56% |
Summary of allowance for loan losses and recorded investment in loans by impairment methodology |
|  | March 31, 2017
|  | Allowance for loan losses |  | Recorded investment in loans
(dollars in thousands) |  | Commercial |  | Consumer |  | Total |  | Commercial |  | Consumer |  | Total
Individually evaluated |  | $ | 1,990 |  | 759 |  | 2,749 |  | 9,708 |  | 2,266 |  | 11,974
Collectively evaluated |  |  | 8,230 |  | 4,308 |  | 12,538 |  | 782,520 |  | 424,186 |  | 1,206,706
Total |  | $ | 10,220 |  | 5,067 |  | 15,287 |  | 792,228 |  | 426,452 |  | 1,218,680
|  | December 31, 2016
|  | Allowance for loan losses |  | Recorded investment in loans
|  | Commercial |  | Consumer |  | Total |  | Commercial |  | Consumer |  | Total
Individually evaluated |  | $ | 1,874 |  | 770 |  | 2,644 |  | 8,867 |  | 2,290 |  | 11,157
Collectively evaluated |  |  | 8,165 |  | 4,046 |  | 12,211 |  | 752,590 |  | 399,897 |  | 1,152,487
Total |  | $ | 10,039 |  | 4,816 |  | 14,855 |  | 761,457 |  | 402,187 |  | 1,163,644
Commercial [Member] |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Summary of breakdown of outstanding loans by risk category |
| March 31, 2017
|  | Owner |  | Non-owner |  |  |  |  |  |
(dollars in thousands) |  | occupied RE |  | occupied RE |  | Construction |  | Business |  | Total
Pass |  | $ | 282,726 |  | 253,421 |  | 36,889 |  | 198,953 |  | 771,989
Special mention |  |  | 3,164 |  | 976 |  | - |  | 3,735 |  | 7,875
Substandard |  |  | 2,410 |  | 4,052 |  | - |  | 5,902 |  | 12,364
Doubtful |  |  | - |  | - |  | - |  | - |  | -
|  | $ | 288,300 |  | 258,449 |  | 36,889 |  | 208,590 |  | 792,228
| December 31, 2016
|  |  | Owner |  | Non-owner |  |  |  |  |  |
|  |  | occupied RE |  | occupied RE |  | Construction |  | Business |  | Total
Pass |  | $ | 282,055 |  | 234,957 |  | 33,393 |  | 193,517 |  | 743,922
Special mention |  |  | 1,097 |  | 975 |  | - |  | 2,489 |  | 4,561
Substandard |  |  | 2,786 |  | 3,642 |  | - |  | 6,546 |  | 12,974
Doubtful |  |  | - |  | - |  | - |  | - |  | -
|  | $ | 285,938 |  | 239,574 |  | 33,393 |  | 202,552 |  | 761,457
Summary of outstanding loans which include loans on nonaccrual by past due status |
|  |  |  |  |  |  |  |  | March 31, 2017
|  |  | Owner |  | Non-owner |  |  |  |  |  |
(dollars in thousands) |  |  | occupied RE |  | occupied RE |  | Construction |  | Business |  | Total
Current |  | $ | 288,035 |  | 256,991 |  | 36,889 |  | 206,466 |  | 788,381
30-59 days past due |  |  | - |  | 416 |  | - |  | 651 |  | 1,067
60-89 days past due |  |  | 249 |  | - |  | - |  | 1,100 |  | 1,349
Greater than 90 Days |  |  | 16 |  | 1,042 |  | - |  | 373 |  | 1,431
|  | $ | 288,300 |  | 258,449 |  | 36,889 |  | 208,590 |  | 792,228
| December 31, 2016
|  |  | Owner |  | Non-owner |  |  |  |  |  |
|  |  | occupied RE |  | occupied RE |  | Construction |  | Business |  | Total
Current |  | $ | 284,700 |  | 238,346 |  | 33,393 |  | 200,624 |  | 757,063
30-59 days past due |  |  | 981 |  | - |  | - |  | 1,423 |  | 2,404
60-89 days past due |  |  | 257 |  | 56 |  | - |  | - |  | 313
Greater than 90 Days |  |  | - |  | 1,172 |  | - |  | 505 |  | 1,677
|  | $ | 285,938 |  | 239,574 |  | 33,393 |  | 202,552 |  | 761,457
Consumer [Member] |
Financing Receivable, Allowance for Credit Losses [Line Items] |
Summary of breakdown of outstanding loans by risk category |
| March 31, 2017
(dollars in thousands) |  |  | Real estate |  | Home equity |  | Construction |  | Other |  | Total
Pass |  | $ | 226,785 |  | 140,439 |  | 31,535 |  | 20,428 |  | 419,187
Special mention |  |  | 860 |  | 2,184 |  | - |  | 24 |  | 3,068
Substandard |  |  | 3,050 |  | 1,050 |  | - |  | 97 |  | 4,197
Doubtful |  |  | - |  | - |  | - |  | - |  | -
Loss |  |  | - |  | - |  | - |  | - |  | -
|  | $ | 230,695 |  | 143,673 |  | 31,535 |  | 20,549 |  | 426,452
| December 31, 2016
|  | Real estate |  | Home equity |  | Construction |  | Other |  | Total
Pass |  | $ | 211,563 |  | 134,124 |  | 31,922 |  | 17,485 |  | 395,094
Special mention |  |  | 1,064 |  | 2,109 |  | - |  | 16 |  | 3,189
Substandard |  |  | 2,961 |  | 872 |  | - |  | 71 |  | 3,904
Doubtful |  |  | - |  | - |  | - |  | - |  | -
Loss |  |  | - |  | - |  | - |  | - |  | -
|  | $ | 215,588 |  | 137,105 |  | 31,922 |  | 17,572 |  | 402,187
Summary of outstanding loans which include loans on nonaccrual by past due status |
| March 31, 2017
(dollars in thousands) |  | Real estate |  | Home equity |  | Construction |  | Other |  | Total
Current |  | $ | 229,729 |  | 143,078 |  | 31,535 |  | 20,510 |  | 424,852
30-59 days past due |  |  | 413 |  | 209 |  | - |  | 39 |  | 661
60-89 days past due |  |  | 553 |  | 129 |  | - |  | - |  | 682
Greater than 90 Days |  |  | - |  | 257 |  | - |  | - |  | 257
|  | $ | 230,695 |  | 143,673 |  | 31,535 |  | 20,549 |  | 426,452
| December 31, 2016
|  |  | Real estate |  | Home equity |  | Construction |  | Other |  | Total
Current |  | $ | 214,228 |  | 136,638 |  | 31,922 |  | 17,427 |  | 400,215
30-59 days past due |  |  | 1,041 |  | 210 |  | - |  | 126 |  | 1,377
60-89 days past due |  |  | 282 |  | - |  | - |  | 6 |  | 288
Greater than 90 Days |  |  | 37 |  | 257 |  | - |  | 13 |  | 307
|  | $ | 215,588 |  | 137,105 |  | 31,922 |  | 17,572 |  | 402,187

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