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Loans and Allowance for Loan Losses - Credit Quality of Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | $ 1,477,570 | $ 1,486,616
Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 2,937 | 2,920
Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 1,437,964 | 1,451,049
Pass | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 2,937 | 2,920
Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 9,376 | 15,937
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 | 30,230 | 19,630
Substandard | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 0 | 0
Commercial loans | Commercial and industrial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 219,719 | 218,575
Total loans | 219,760 | 218,615
Commercial loans | Commercial and industrial | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 41 | 40
Commercial loans | Commercial and industrial | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 201,777 | 201,987
Commercial loans | Commercial and industrial | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 4,554 | 9,197
Commercial loans | Commercial and industrial | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 13,388 | 7,391
Commercial real estate loans | Commercial real estate, owner-occupied |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 253,087 | 246,641
Total loans | 254,180 | 247,713
Commercial real estate loans | Commercial real estate, owner-occupied | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 1,093 | 1,072
Commercial real estate loans | Commercial real estate, owner-occupied | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 239,437 | 234,849
Commercial real estate loans | Commercial real estate, owner-occupied | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 4,573 | 4,799
Commercial real estate loans | Commercial real estate, owner-occupied | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 9,077 | 6,993
Commercial real estate loans | Commercial real estate, investor |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 710,381 | 722,522
Total loans | 712,081 | 724,228
Commercial real estate loans | Commercial real estate, investor | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 1,700 | 1,706
Commercial real estate loans | Commercial real estate, investor | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 707,223 | 720,417
Commercial real estate loans | Commercial real estate, investor | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 249 | 607
Commercial real estate loans | Commercial real estate, investor | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 2,909 | 1,498
Commercial real estate loans | Construction |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 67,162 | 74,809
Total loans | 67,162 | 74,809
Commercial real estate loans | Construction | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 0 | 0
Commercial real estate loans | Construction | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 63,921 | 71,564
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 | 3,241 | 3,245
Residential loans | Home equity |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 115,077 | 117,105
Total loans | 115,180 | 117,207
Residential loans | Home equity | Purchase credit-impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Purchase credit-impaired | 103 | 102
Residential loans | Home equity | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 113,868 | 115,680
Residential loans | Home equity | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 0 | 1,334
Residential loans | Home equity | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans excluding purchased credit-impaired loans | 1,209 | 91
Residential loans | Other residential |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans | 84,720 | 78,549
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 | 84,720 | 78,549
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 | 24,487 | 25,495
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 | 24,081 | 25,083
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 | $ 406 | $ 412

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