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Loans and Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | $ 15,028 | $ 15,156 | $ 14,999 | $ 15,099 |
Provision for loan losses |  | 0 | 0 | 0 | 0 |
Charge-offs |  | (4) | (845) | (13) | (853) |
Recoveries |  | 63 | 43 | 101 | 108 |
Ending balance | $ 14,354 | 15,087 | 14,354 | 15,087 | 14,354 |
Ending ALLL related to loans collectively evaluated for impairment |  | 13,666 |  | 13,666 |  | $ 13,830
Ending ALLL related to loans individually evaluated for impairment |  | 1,421 |  | 1,421 |  | 1,160
Ending ALLL related to purchased credit-impaired loans |  | 15,087 |  | 15,087 |  | 14,999
Collectively evaluated for impairment |  | 1,422,917 |  | 1,422,917 |  | 1,426,497
Individually evaluated for impairment |  | 22,619 |  | 22,619 |  | 21,050
Total loans |  | $ 1,448,399 |  | $ 1,448,399 |  | $ 1,451,228
Ratio of allowance for loan losses to total loans |  | 1.04% |  | 1.04% |  | 1.03%
Allowance for loan losses to non-accrual loans |  | 554.00% |  | 554.00% |  | 688.00%
PCI loans impaired post-acquisition |  |  |  |  |  | $ 138
Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | $ 0 |  | $ 0 |  | 9
Purchase credit-impaired |  | 2,863 |  | 2,863 |  | 3,681
Commercial loans | Commercial and industrial |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 2,799 | 2,620 | 3,023 | 2,837 |
Provision for loan losses |  | (192) | (117) | (440) | (392) |
Charge-offs |  | 0 | (1) | (9) | (3) |
Recoveries |  | 30 | 38 | 63 | 98 |
Ending balance | 2,540 | 2,637 | 2,540 | 2,637 | 2,540 |
Ending ALLL related to loans collectively evaluated for impairment |  | 1,966 |  | 1,966 |  | 2,111
Ending ALLL related to loans individually evaluated for impairment |  | 671 |  | 671 |  | 904
Ending ALLL related to purchased credit-impaired loans |  | 2,637 |  | 2,637 |  | 3,023
Collectively evaluated for impairment |  | 211,522 |  | 211,522 |  | 214,695
Individually evaluated for impairment |  | 3,696 |  | 3,696 |  | 4,582
Total loans |  | $ 215,257 |  | $ 215,257 |  | $ 219,452
Ratio of allowance for loan losses to total loans |  | 1.23% |  | 1.23% |  | 1.38%
Allowance for loan losses to non-accrual loans |  | 12557.00% |  | 12557.00% |  | 14395.00%
Commercial loans | Commercial and industrial | Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | $ 0 |  | $ 0 |  | $ 8
Purchase credit-impaired |  | 39 |  | 39 |  | 175
Commercial real estate loans | Commercial real estate, owner-occupied |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 1,619 | 2,094 | 2,249 | 1,924 |
Provision for loan losses |  | 12 | (42) | (618) | 128 |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 0 | 0 | 0 | 0 |
Ending balance | 2,052 | 1,631 | 2,052 | 1,631 | 2,052 |
Ending ALLL related to loans collectively evaluated for impairment |  | 1,533 |  | 1,533 |  | 2,179
Ending ALLL related to loans individually evaluated for impairment |  | 98 |  | 98 |  | 70
Ending ALLL related to purchased credit-impaired loans |  | 1,631 |  | 1,631 |  | 2,249
Collectively evaluated for impairment |  | 233,896 |  | 233,896 |  | 233,605
Individually evaluated for impairment |  | 7,169 |  | 7,169 |  | 6,993
Total loans |  | $ 242,103 |  | $ 242,103 |  | $ 242,309
Ratio of allowance for loan losses to total loans |  | 0.67% |  | 0.67% |  | 0.93%
Allowance for loan losses to non-accrual loans |  | 927.00% |  | 927.00% |  |
Commercial real estate loans | Commercial real estate, owner-occupied | Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | $ 0 |  | $ 0 |  | $ 0
Purchase credit-impaired |  | 1,038 |  | 1,038 |  | 1,711
Commercial real estate loans | Commercial real estate, investor |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 6,571 | 6,292 | 6,178 | 6,672 |
Provision for loan losses |  | 19 | (351) | 407 | (734) |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 5 | 3 | 10 | 6 |
Ending balance | 5,944 | 6,595 | 5,944 | 6,595 | 5,944 |
Ending ALLL related to loans collectively evaluated for impairment |  | 6,123 |  | 6,123 |  | 6,178
Ending ALLL related to loans individually evaluated for impairment |  | 472 |  | 472 |  | 0
Ending ALLL related to purchased credit-impaired loans |  | 6,595 |  | 6,595 |  | 6,178
Collectively evaluated for impairment |  | 697,750 |  | 697,750 |  | 711,737
Individually evaluated for impairment |  | 3,993 |  | 3,993 |  | 2,416
Total loans |  | $ 703,458 |  | $ 703,458 |  | $ 715,879
Ratio of allowance for loan losses to total loans |  | 0.94% |  | 0.94% |  | 0.86%
Allowance for loan losses to non-accrual loans |  | 393.00% |  | 393.00% |  | 325.00%
Commercial real estate loans | Commercial real estate, investor | Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | $ 0 |  | $ 0 |  | $ 0
Purchase credit-impaired |  | 1,715 |  | 1,715 |  | 1,726
Commercial real estate loans | Construction |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 822 | 778 | 724 | 839 |
Provision for loan losses |  | 9 | 596 | 107 | 535 |
Charge-offs | (839) | 0 | (839) | 0 | (839) |
Recoveries |  | 0 | 0 | 0 | 0 |
Ending balance | 535 | 831 | 535 | 831 | 535 |
Ending ALLL related to loans collectively evaluated for impairment |  | 826 |  | 826 |  | 723
Ending ALLL related to loans individually evaluated for impairment |  | 5 |  | 5 |  | 0
Ending ALLL related to purchased credit-impaired loans |  | 831 |  | 831 |  | 724
Collectively evaluated for impairment |  | 73,786 |  | 73,786 |  | 62,256
Individually evaluated for impairment |  | 3,238 |  | 3,238 |  | 3,238
Total loans |  | $ 77,024 |  | $ 77,024 |  | $ 65,495
Ratio of allowance for loan losses to total loans |  | 1.08% |  | 1.08% |  | 1.11%
Allowance for loan losses to non-accrual loans |  |  |  |  |  | 72400.00%
Commercial real estate loans | Construction | Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | $ 0 |  | $ 0 |  | $ 1
Purchase credit-impaired |  | 0 |  | 0 |  | 1
Residential loans | Home equity |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 1,044 | 923 | 910 | 859 |
Provision for loan losses |  | 31 | (81) | 165 | (18) |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 1 | 1 | 1 | 2 |
Ending balance | 843 | 1,076 | 843 | 1,076 | 843 |
Ending ALLL related to loans collectively evaluated for impairment |  | 1,064 |  | 1,064 |  | 907
Ending ALLL related to loans individually evaluated for impairment |  | 12 |  | 12 |  | 3
Ending ALLL related to purchased credit-impaired loans |  | 1,076 |  | 1,076 |  | 910
Collectively evaluated for impairment |  | 110,774 |  | 110,774 |  | 111,673
Individually evaluated for impairment |  | 1,395 |  | 1,395 |  | 559
Total loans |  | $ 112,240 |  | $ 112,240 |  | $ 112,300
Ratio of allowance for loan losses to total loans |  | 0.96% |  | 0.96% |  | 0.81%
Allowance for loan losses to non-accrual loans |  | 136.00% |  | 136.00% |  | 532.00%
Residential loans | Home equity | Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | $ 0 |  | $ 0 |  | $ 0
Purchase credit-impaired |  | 71 |  | 71 |  | 68
Residential loans | Other residential |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 430 | 430 | 394 | 433 |
Provision for loan losses |  | (4) | 5 | 32 | 2 |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 0 | 0 | 0 | 0 |
Ending balance | 435 | 426 | 435 | 426 | 435 |
Ending ALLL related to loans collectively evaluated for impairment |  | 362 |  | 362 |  | 327
Ending ALLL related to loans individually evaluated for impairment |  | 64 |  | 64 |  | 67
Ending ALLL related to purchased credit-impaired loans |  | 426 |  | 426 |  | 394
Collectively evaluated for impairment |  | 71,774 |  | 71,774 |  | 71,143
Individually evaluated for impairment |  | 1,987 |  | 1,987 |  | 2,011
Total loans |  | $ 73,761 |  | $ 73,761 |  | $ 73,154
Ratio of allowance for loan losses to total loans |  | 0.58% |  | 0.58% |  | 0.54%
Residential loans | Other residential | Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | $ 0 |  | $ 0 |  | $ 0
Purchase credit-impaired |  | 0 |  | 0 |  | 0
Consumer loans | Installment and other consumer |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 434 | 462 | 425 | 566 |
Provision for loan losses |  | (20) | (14) | (11) | (113) |
Charge-offs |  | (4) | (5) | (4) | (11) |
Recoveries |  | 27 | 1 | 27 | 2 |
Ending balance | 444 | 437 | 444 | 437 | 444 |
Ending ALLL related to loans collectively evaluated for impairment |  | 338 |  | 338 |  | 309
Ending ALLL related to loans individually evaluated for impairment |  | 99 |  | 99 |  | 116
Ending ALLL related to purchased credit-impaired loans |  | 437 |  | 437 |  | 425
Collectively evaluated for impairment |  | 23,415 |  | 23,415 |  | 21,388
Individually evaluated for impairment |  | 1,141 |  | 1,141 |  | 1,251
Total loans |  | $ 24,556 |  | $ 24,556 |  | $ 22,639
Ratio of allowance for loan losses to total loans |  | 1.78% |  | 1.78% |  | 1.88%
Allowance for loan losses to non-accrual loans |  | 694.00% |  | 694.00% |  | 512.00%
Consumer loans | Installment and other consumer | Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | $ 0 |  | $ 0 |  | $ 0
Purchase credit-impaired |  | 0 |  | 0 |  | 0
Unallocated |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 1,309 | 1,557 | 1,096 | 969 |
Provision for loan losses |  | 145 | 4 | 358 | 592 |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 0 | 0 | 0 | 0 |
Ending balance | $ 1,561 | 1,454 | $ 1,561 | 1,454 | $ 1,561 |
Ending ALLL related to loans collectively evaluated for impairment |  | 1,454 |  | 1,454 |  | 1,096
Ending ALLL related to loans individually evaluated for impairment |  | 0 |  | 0 |  | 0
Ending ALLL related to purchased credit-impaired loans |  | 1,454 |  | 1,454 |  | 1,096
Collectively evaluated for impairment |  | 0 |  | 0 |  | 0
Individually evaluated for impairment |  | 0 |  | 0 |  | 0
Total loans |  | 0 |  | 0 |  | 0
Unallocated | Purchase credit-impaired |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Ending ALLL related to purchased credit-impaired loans |  | 0 |  | 0 |  | 0
Purchase credit-impaired |  | $ 0 |  | $ 0 |  | $ 0

X
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