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Loans and Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | $ 14,999 | $ 15,099 | $ 14,224
Provision (reversal) | (1,850) | 500 | 750
Charge-offs | (36) | (864) | (277)
Recoveries | 2,329 | 264 | 402
Ending balance | 15,442 | 14,999 | 15,099
Ending ALLL related to loans collectively evaluated for impairment | 14,451 | 13,830 |
Ending ALLL related to loans individually evaluated for impairment | 991 | 1,160 |
Ending ALLL | 15,442 | 14,999 |
Collectively evaluated for impairment | 1,465,383 | 1,426,497 |
Individually evaluated for impairment | 18,313 | 21,050 |
Total loans | $ 1,486,616 | $ 1,451,228 |
Ratio of allowance for loan losses to total loans | 1.04% | 1.03% |
Allowance for loan losses to non-accrual loans | 10650.00% | 688.00% |
PCI loans impaired post-acquisition |  | $ 138 |
Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | $ 0 | 9 |
Purchased credit-impaired | 2,920 | 3,681 |
Commercial loans | Commercial and industrial |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 3,023 | 2,837 | 3,056
Provision (reversal) | 93 | (45) | (321)
Charge-offs | (11) | (5) | (66)
Recoveries | 143 | 236 | 168
Ending balance |  | 3,023 | 2,837
Ending ALLL related to loans collectively evaluated for impairment | 2,963 | 2,111 |
Ending ALLL related to loans individually evaluated for impairment | 285 | 904 |
Ending ALLL | 3,248 | 3,023 |
Collectively evaluated for impairment | 216,368 | 214,695 |
Individually evaluated for impairment | 2,207 | 4,582 |
Total loans | $ 218,615 | $ 219,452 |
Ratio of allowance for loan losses to total loans | 1.49% | 1.38% |
Allowance for loan losses to non-accrual loans |  | 14395.00% |
Commercial loans | Commercial and industrial | Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | $ 0 | $ 8 |
Purchased credit-impaired | 40 | 175 |
Commercial real estate loans | Commercial real estate, owner-occupied |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 2,249 | 1,924 | 2,012
Provision (reversal) | (476) | 325 | (93)
Charge-offs | (20) | 0 | 0
Recoveries | 0 | 0 | 5
Ending balance |  | 2,249 | 1,924
Ending ALLL related to loans collectively evaluated for impairment | 1,590 | 2,179 |
Ending ALLL related to loans individually evaluated for impairment | 163 | 70 |
Ending ALLL | 1,753 | 2,249 |
Collectively evaluated for impairment | 239,648 | 233,605 |
Individually evaluated for impairment | 6,993 | 6,993 |
Total loans | $ 247,713 | $ 242,309 |
Ratio of allowance for loan losses to total loans | 0.71% | 0.93% |
Commercial real estate loans | Commercial real estate, owner-occupied | Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | $ 0 | $ 0 |
Purchased credit-impaired | 1,072 | 1,711 |
Commercial real estate loans | Commercial real estate, investor |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 6,178 | 6,672 | 6,196
Provision (reversal) | (2,014) | (517) | 431
Charge-offs | 0 | 0 | 0
Recoveries | 2,156 | 23 | 45
Ending balance |  | 6,178 | 6,672
Ending ALLL related to loans collectively evaluated for impairment | 5,945 | 6,178 |
Ending ALLL related to loans individually evaluated for impairment | 375 | 0 |
Ending ALLL | 6,320 | 6,178 |
Collectively evaluated for impairment | 720,266 | 711,737 |
Individually evaluated for impairment | 2,256 | 2,416 |
Total loans | $ 724,228 | $ 715,879 |
Ratio of allowance for loan losses to total loans | 0.87% | 0.86% |
Allowance for loan losses to non-accrual loans |  | 325.00% |
Commercial real estate loans | Commercial real estate, investor | Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | $ 0 | $ 0 |
Purchased credit-impaired | 1,706 | 1,726 |
Commercial real estate loans | Construction |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 724 | 839 | 633
Provision (reversal) | 57 | 724 | 314
Charge-offs | 0 | (839) | (204)
Recoveries | 0 | 0 | 96
Ending balance |  | 724 | 839
Ending ALLL related to loans collectively evaluated for impairment | 773 | 723 |
Ending ALLL related to loans individually evaluated for impairment | 8 | 0 |
Ending ALLL | 781 | 724 |
Collectively evaluated for impairment | 71,564 | 62,256 |
Individually evaluated for impairment | 3,245 | 3,238 |
Total loans | $ 74,809 | $ 65,495 |
Ratio of allowance for loan losses to total loans | 1.04% | 1.11% |
Allowance for loan losses to non-accrual loans |  | 72400.00% |
Commercial real estate loans | Construction | Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | $ 0 | $ 1 |
Purchased credit-impaired | 0 | 1 |
Residential loans | Home equity |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 910 | 859 | 875
Provision (reversal) | 60 | 48 | (19)
Charge-offs | 0 | 0 | 0
Recoveries | 3 | 3 | 3
Ending balance |  | 910 | 859
Ending ALLL related to loans collectively evaluated for impairment | 966 | 907 |
Ending ALLL related to loans individually evaluated for impairment | 7 | 3 |
Ending ALLL | 973 | 910 |
Collectively evaluated for impairment | 116,390 | 111,673 |
Individually evaluated for impairment | 715 | 559 |
Total loans | $ 117,207 | $ 112,300 |
Ratio of allowance for loan losses to total loans | 0.83% | 0.81% |
Allowance for loan losses to non-accrual loans | 1071.00% | 532.00% |
Residential loans | Home equity | Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | $ 0 | $ 0 |
Purchased credit-impaired | 102 | 68 |
Residential loans | Other residential |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 394 | 433 | 317
Provision (reversal) | 60 | (39) | 116
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Ending balance |  | 394 | 433
Ending ALLL related to loans collectively evaluated for impairment | 399 | 327 |
Ending ALLL related to loans individually evaluated for impairment | 55 | 67 |
Ending ALLL | 454 | 394 |
Collectively evaluated for impairment | 76,584 | 71,143 |
Individually evaluated for impairment | 1,965 | 2,011 |
Total loans | $ 78,549 | $ 73,154 |
Ratio of allowance for loan losses to total loans | 0.58% | 0.54% |
Residential loans | Other residential | Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | $ 0 | $ 0 |
Purchased credit-impaired | 0 | 0 |
Consumer loans | Installment and other consumer |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 425 | 566 | 629
Provision (reversal) | (75) | (123) | (141)
Charge-offs | (5) | (20) | (7)
Recoveries | 27 | 2 | 85
Ending balance |  | 425 | 566
Ending ALLL related to loans collectively evaluated for impairment | 274 | 309 |
Ending ALLL related to loans individually evaluated for impairment | 98 | 116 |
Ending ALLL | 372 | 425 |
Collectively evaluated for impairment | 24,563 | 21,388 |
Individually evaluated for impairment | 932 | 1,251 |
Total loans | $ 25,495 | $ 22,639 |
Ratio of allowance for loan losses to total loans | 1.46% | 1.88% |
Allowance for loan losses to non-accrual loans | 683.00% | 512.00% |
Consumer loans | Installment and other consumer | Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | $ 0 | $ 0 |
Purchased credit-impaired | 0 | 0 |
Unallocated |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Beginning balance | 1,096 | 969 | 506
Provision (reversal) | 445 | 127 | 463
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Ending balance |  | 1,096 | $ 969
Ending ALLL related to loans collectively evaluated for impairment | 1,541 | 1,096 |
Ending ALLL related to loans individually evaluated for impairment | 0 | 0 |
Ending ALLL | 1,541 | 1,096 |
Collectively evaluated for impairment | 0 | 0 |
Individually evaluated for impairment | 0 | 0 |
Total loans | 0 | 0 |
Unallocated | Receivables Acquired with Deteriorated Credit Quality |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Ending ALLL | 0 | 0 |
Purchased credit-impaired | $ 0 | $ 0 |

X
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