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Loans and Allowance for Loan Losses - Credit Quality (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 1,798,690 | $ 1,763,864
Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,734,801 | 1,733,916
Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 53,954 | 17,340
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 9,935 | 12,608
Purchased credit-impaired |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 2,059 | 2,112
Purchased credit-impaired | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 2,059 | 2,112
Purchased credit-impaired | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 0 | 0
Purchased credit-impaired | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 0 | 0
Commercial loans | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 260,824 | 230,708
Total loans | 260,828 | 230,739
Commercial loans | Commercial and industrial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 219,346 | 219,625
Commercial loans | Commercial and industrial | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 41,092 | 9,957
Commercial loans | Commercial and industrial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 386 | 1,126
Commercial loans | Purchased credit-impaired | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 4 | 31
Commercial real estate loans | Commercial real estate, owner-occupied |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 309,333 | 312,090
Total loans | 310,486 | 313,277
Commercial real estate loans | Commercial real estate, owner-occupied | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 290,074 | 299,998
Commercial real estate loans | Commercial real estate, owner-occupied | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 10,198 | 4,106
Commercial real estate loans | Commercial real estate, owner-occupied | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 9,061 | 7,986
Commercial real estate loans | Commercial real estate, investor |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 895,238 | 872,599
Total loans | 896,066 | 873,410
Commercial real estate loans | Commercial real estate, investor | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 893,574 | 870,443
Commercial real estate loans | Commercial real estate, investor | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 1,664 | 2,156
Commercial real estate loans | Commercial real estate, investor | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 0 | 0
Commercial real estate loans | Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 50,254 | 76,423
Total loans | 50,254 | 76,423
Commercial real estate loans | Construction | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 50,254 | 73,735
Commercial real estate loans | Construction | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 0 | 0
Commercial real estate loans | Construction | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 0 | 2,688
Commercial real estate loans | Purchased credit-impaired | Commercial real estate, owner-occupied |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 1,153 | 1,187
Commercial real estate loans | Purchased credit-impaired | Commercial real estate, investor |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 828 | 811
Commercial real estate loans | Purchased credit-impaired | Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 0 | 0
Residential loans | Home equity |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 121,740 | 124,613
Total loans | 121,814 | 124,696
Residential loans | Home equity | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 120,400 | 122,844
Residential loans | Home equity | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 1,000 | 1,121
Residential loans | Home equity | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans excluding purchased credit-impaired loans | 340 | 648
Residential loans | Other residential |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 130,781 | 117,847
Residential loans | Other residential | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 130,781 | 117,847
Residential loans | Other residential | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Residential loans | Other residential | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Residential loans | Purchased credit-impaired | Home equity |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 74 | 83
Residential loans | Purchased credit-impaired | Other residential |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | 0 | 0
Consumer loans | Installment and other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 28,461 | 27,472
Consumer loans | Installment and other consumer | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 28,313 | 27,312
Consumer loans | Installment and other consumer | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Consumer loans | Installment and other consumer | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 148 | 160
Consumer loans | Purchased credit-impaired | Installment and other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Purchased credit-impaired | $ 0 | $ 0

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