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Loans and Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | $ 15,087 | $ 14,354 | $ 14,999 | $ 15,099 |
(Reversal of) provision for loan losses |  | (1,550) | 0 | (1,550) | 0 |
Charge-offs |  | 0 | (3) | (13) | (856) |
Recoveries |  | 2,176 | 106 | 2,277 | 214 |
Ending balance | $ 14,354 | 15,713 | 14,457 | 15,713 | 14,457 |
Ending ALLL related to loans collectively evaluated for impairment |  | 14,370 |  | 14,370 |  | $ 13,830
Ending ALLL related to loans individually evaluated for impairment |  | 1,343 |  | 1,343 |  | 1,160
Ending ALLL related to purchased credit-impaired loans |  | 15,713 |  | 15,713 |  | 14,999
Collectively evaluated for impairment |  | 1,445,132 |  | 1,445,132 |  | 1,426,497
Individually evaluated for impairment |  | 19,657 |  | 19,657 |  | 21,050
Total loans |  | $ 1,467,663 |  | $ 1,467,663 |  | $ 1,451,228
Ratio of allowance for loan losses to total loans |  | 1.07% |  | 1.07% |  | 1.03%
Allowance for loan losses to non-accrual loans |  | 2910.00% |  | 2910.00% |  | 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 |  | 2,874 |  | 2,874 |  | 3,681
Commercial loans | Commercial and industrial |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 2,637 | 2,540 | 3,023 | 2,837 |
(Reversal of) provision for loan losses |  | 828 | 86 | 388 | (306) |
Charge-offs |  | 0 | (2) | (9) | (5) |
Recoveries |  | 29 | 92 | 92 | 190 |
Ending balance | 2,540 | 3,494 | 2,716 | 3,494 | 2,716 |
Ending ALLL related to loans collectively evaluated for impairment |  | 2,925 |  | 2,925 |  | 2,111
Ending ALLL related to loans individually evaluated for impairment |  | 569 |  | 569 |  | 904
Ending ALLL related to purchased credit-impaired loans |  | 3,494 |  | 3,494 |  | 3,023
Collectively evaluated for impairment |  | 218,159 |  | 218,159 |  | 214,695
Individually evaluated for impairment |  | 3,008 |  | 3,008 |  | 4,582
Total loans |  | $ 221,207 |  | $ 221,207 |  | $ 219,452
Ratio of allowance for loan losses to total loans |  | 1.58% |  | 1.58% |  | 1.38%
Allowance for loan losses to non-accrual loans |  | 7941.00% |  | 7941.00% |  | 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 |  | 40 |  | 40 |  | 175
Commercial real estate loans | Commercial real estate, owner-occupied |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 1,631 | 2,052 | 2,249 | 1,924 |
(Reversal of) provision for loan losses |  | (10) | 17 | (628) | 145 |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 0 | 0 | 0 | 0 |
Ending balance | 2,052 | 1,621 | 2,069 | 1,621 | 2,069 |
Ending ALLL related to loans collectively evaluated for impairment |  | 1,513 |  | 1,513 |  | 2,179
Ending ALLL related to loans individually evaluated for impairment |  | 108 |  | 108 |  | 70
Ending ALLL related to purchased credit-impaired loans |  | 1,621 |  | 1,621 |  | 2,249
Collectively evaluated for impairment |  | 229,316 |  | 229,316 |  | 233,605
Individually evaluated for impairment |  | 7,169 |  | 7,169 |  | 6,993
Total loans |  | $ 237,538 |  | $ 237,538 |  | $ 242,309
Ratio of allowance for loan losses to total loans |  | 0.68% |  | 0.68% |  | 0.93%
Allowance for loan losses to non-accrual loans |  | 921.00% |  | 921.00% |  |
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 |  | 1,053 |  | 1,053 |  | 1,711
Commercial real estate loans | Commercial real estate, investor |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 6,595 | 5,944 | 6,178 | 6,672 |
(Reversal of) provision for loan losses |  | (2,416) | 128 | (2,009) | (606) |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 2,146 | 12 | 2,156 | 18 |
Ending balance | 5,944 | 6,325 | 6,084 | 6,325 | 6,084 |
Ending ALLL related to loans collectively evaluated for impairment |  | 5,851 |  | 5,851 |  | 6,178
Ending ALLL related to loans individually evaluated for impairment |  | 474 |  | 474 |  | 0
Ending ALLL related to purchased credit-impaired loans |  | 6,325 |  | 6,325 |  | 6,178
Collectively evaluated for impairment |  | 711,042 |  | 711,042 |  | 711,737
Individually evaluated for impairment |  | 2,299 |  | 2,299 |  | 2,416
Total loans |  | $ 715,051 |  | $ 715,051 |  | $ 715,879
Ratio of allowance for loan losses to total loans |  | 0.88% |  | 0.88% |  | 0.86%
Allowance for loan losses to non-accrual loans |  |  |  |  |  | 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 |  | 1,710 |  | 1,710 |  | 1,726
Commercial real estate loans | Construction |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 831 | 535 | 724 | 839 |
(Reversal of) provision for loan losses |  | 105 | 158 | 212 | 693 |
Charge-offs | (839) | 0 | 0 | 0 | (839) |
Recoveries |  | 0 | 0 | 0 | 0 |
Ending balance | 535 | 936 | 693 | 936 | 693 |
Ending ALLL related to loans collectively evaluated for impairment |  | 931 |  | 931 |  | 723
Ending ALLL related to loans individually evaluated for impairment |  | 5 |  | 5 |  | 0
Ending ALLL related to purchased credit-impaired loans |  | 936 |  | 936 |  | 724
Collectively evaluated for impairment |  | 77,253 |  | 77,253 |  | 62,256
Individually evaluated for impairment |  | 3,238 |  | 3,238 |  | 3,238
Total loans |  | $ 80,491 |  | $ 80,491 |  | $ 65,495
Ratio of allowance for loan losses to total loans |  | 1.16% |  | 1.16% |  | 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 |  | 1,076 | 843 | 910 | 859 |
(Reversal of) provision for loan losses |  | (125) | 9 | 40 | (9) |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 1 | 1 | 2 | 3 |
Ending balance | 843 | 952 | 853 | 952 | 853 |
Ending ALLL related to loans collectively evaluated for impairment |  | 918 |  | 918 |  | 907
Ending ALLL related to loans individually evaluated for impairment |  | 34 |  | 34 |  | 3
Ending ALLL related to purchased credit-impaired loans |  | 952 |  | 952 |  | 910
Collectively evaluated for impairment |  | 110,255 |  | 110,255 |  | 111,673
Individually evaluated for impairment |  | 885 |  | 885 |  | 559
Total loans |  | $ 111,211 |  | $ 111,211 |  | $ 112,300
Ratio of allowance for loan losses to total loans |  | 0.86% |  | 0.86% |  | 0.81%
Allowance for loan losses to non-accrual loans |  | 366.00% |  | 366.00% |  | 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 |  | 426 | 435 | 394 | 433 |
(Reversal of) provision for loan losses |  | 22 | (50) | 54 | (48) |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 0 | 0 | 0 | 0 |
Ending balance | 435 | 448 | 385 | 448 | 385 |
Ending ALLL related to loans collectively evaluated for impairment |  | 389 |  | 389 |  | 327
Ending ALLL related to loans individually evaluated for impairment |  | 59 |  | 59 |  | 67
Ending ALLL related to purchased credit-impaired loans |  | 448 |  | 448 |  | 394
Collectively evaluated for impairment |  | 75,795 |  | 75,795 |  | 71,143
Individually evaluated for impairment |  | 1,974 |  | 1,974 |  | 2,011
Total loans |  | $ 77,769 |  | $ 77,769 |  | $ 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 |  | 437 | 444 | 425 | 566 |
(Reversal of) provision for loan losses |  | (73) | 32 | (84) | (81) |
Charge-offs |  | 0 | (1) | (4) | (12) |
Recoveries |  | 0 | 1 | 27 | 3 |
Ending balance | 444 | 364 | 476 | 364 | 476 |
Ending ALLL related to loans collectively evaluated for impairment |  | 270 |  | 270 |  | 309
Ending ALLL related to loans individually evaluated for impairment |  | 94 |  | 94 |  | 116
Ending ALLL related to purchased credit-impaired loans |  | 364 |  | 364 |  | 425
Collectively evaluated for impairment |  | 23,312 |  | 23,312 |  | 21,388
Individually evaluated for impairment |  | 1,084 |  | 1,084 |  | 1,251
Total loans |  | $ 24,396 |  | $ 24,396 |  | $ 22,639
Ratio of allowance for loan losses to total loans |  | 1.49% |  | 1.49% |  | 1.88%
Allowance for loan losses to non-accrual loans |  | 607.00% |  | 607.00% |  | 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 |  | 1,454 | 1,561 | 1,096 | 969 |
(Reversal of) provision for loan losses |  | 119 | (380) | 477 | 212 |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 0 | 0 | 0 | 0 |
Ending balance | $ 1,561 | 1,573 | $ 1,181 | 1,573 | $ 1,181 |
Ending ALLL related to loans collectively evaluated for impairment |  | 1,573 |  | 1,573 |  | 1,096
Ending ALLL related to loans individually evaluated for impairment |  | 0 |  | 0 |  | 0
Ending ALLL related to purchased credit-impaired loans |  | 1,573 |  | 1,573 |  | 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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