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Loans and Allowance for Loan Losses - Credit Quality of Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | $ 1,448,399 | $ 1,451,228
Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 2,863 | 3,681
Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,412,599 | 1,392,597
Pass | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 2,863 | 3,260
Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 15,401 | 36,300
Special Mention | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 0 | 0
Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 20,399 | 22,331
Substandard | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 0 | 421
Commercial loans | Commercial and industrial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 215,218 | 219,277
Total loans | 215,257 | 219,452
Commercial loans | Commercial and industrial | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 39 | 175
Commercial loans | Commercial and industrial | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 199,923 | 192,560
Commercial loans | Commercial and industrial | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 11,818 | 22,457
Commercial loans | Commercial and industrial | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 3,477 | 4,260
Commercial real estate loans | Commercial real estate, owner-occupied |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 241,065 | 240,598
Total loans | 242,103 | 242,309
Commercial real estate loans | Commercial real estate, owner-occupied | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 1,038 | 1,711
Commercial real estate loans | Commercial real estate, owner-occupied | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 230,799 | 219,060
Commercial real estate loans | Commercial real estate, owner-occupied | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 2,101 | 12,371
Commercial real estate loans | Commercial real estate, owner-occupied | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 8,165 | 9,167
Commercial real estate loans | Commercial real estate, investor |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 701,743 | 714,153
Total loans | 703,458 | 715,879
Commercial real estate loans | Commercial real estate, investor | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 1,715 | 1,726
Commercial real estate loans | Commercial real estate, investor | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 697,897 | 710,042
Commercial real estate loans | Commercial real estate, investor | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 362 | 372
Commercial real estate loans | Commercial real estate, investor | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 3,484 | 3,739
Commercial real estate loans | Construction |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 77,024 | 65,494
Total loans | 77,024 | 65,495
Commercial real estate loans | Construction | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 0 | 1
Commercial real estate loans | Construction | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 73,786 | 62,255
Commercial real estate loans | Construction | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 0 | 0
Commercial real estate loans | Construction | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 3,238 | 3,239
Residential loans | Home equity |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 112,169 | 112,232
Total loans | 112,240 | 112,300
Residential loans | Home equity | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 71 | 68
Residential loans | Home equity | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 109,408 | 109,959
Residential loans | Home equity | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 1,120 | 1,100
Residential loans | Home equity | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 1,641 | 1,173
Residential loans | Other residential |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 73,761 | 73,154
Residential loans | Other residential | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 0 | 0
Residential loans | Other residential | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 73,761 | 73,154
Residential loans | Other residential | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 0 | 0
Residential loans | Other residential | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Installment and other consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 24,556 | 22,639
Consumer loans | Installment and other consumer | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 0 | 0
Consumer loans | Installment and other consumer | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 24,162 | 22,307
Consumer loans | Installment and other consumer | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Installment and other consumer | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | $ 394 | $ 332

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