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Loans and Allowance for Loan Losses - Loans Outstanding and Aging Analysis (Details) $ in Thousands | Jun. 30, 2015 USD ($) loans | Dec. 31, 2014 USD ($) loans
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 8,219 | $ 10,359
Current | 1,330,986 | 1,352,992
Total loans | $ 1,339,205 | $ 1,363,351
Non-accrual loans to total loans | 0.50% | 0.70%
Purchased Credit Impaired (PCI) loans no longer accreting interest | $ 1,400 | $ 1,400
Purchased Credit-impaired (PCI) loans accreting interest | $ 3,700 | $ 3,800
Number of accruing loans past due more than ninety days | loans | 0 | 0
Deferred loan fees | $ 781 | $ 487
Unaccreted purchase discounts on non-PCI loans | 3,700 | 4,400
30-59 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 1,147 | 1,009
60-89 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 4 | 0
Greater than 90 days past due (non-accrual) 2 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 7,068 | 9,350
Commercial loans | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 347 | 183
Current | 184,673 | 210,040
Total loans | $ 185,020 | $ 210,223
Non-accrual loans to total loans | 0.20% | 0.00%
Commercial loans | Commercial and industrial | 30-59 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 0 | $ 183
Commercial loans | Commercial and industrial | 60-89 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 0 | 0
Commercial loans | Commercial and industrial | Greater than 90 days past due (non-accrual) 2 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 347 | 0
Commercial real estate loans | Commercial real estate, owner-occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 1,403 | 1,403
Current | 233,718 | 229,202
Total loans | $ 235,121 | $ 230,605
Non-accrual loans to total loans | 0.60% | 0.60%
Commercial real estate loans | Commercial real estate, owner-occupied | 30-59 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 0 | $ 0
Commercial real estate loans | Commercial real estate, owner-occupied | 60-89 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 0 | 0
Commercial real estate loans | Commercial real estate, owner-occupied | Greater than 90 days past due (non-accrual) 2 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 1,403 | 1,403
Commercial real estate loans | Commercial real estate, investor |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 2,278 | 2,429
Current | 661,079 | 671,070
Total loans | $ 663,357 | $ 673,499
Non-accrual loans to total loans | 0.30% | 0.40%
Commercial real estate loans | Commercial real estate, investor | 30-59 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 0 | $ 0
Commercial real estate loans | Commercial real estate, investor | 60-89 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 0 | 0
Commercial real estate loans | Commercial real estate, investor | Greater than 90 days past due (non-accrual) 2 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 2,278 | 2,429
Commercial real estate loans | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 2,733 | 5,134
Current | 46,021 | 43,279
Total loans | $ 48,754 | $ 48,413
Non-accrual loans to total loans | 5.60% | 10.60%
Commercial real estate loans | Construction | 30-59 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 0 | $ 0
Commercial real estate loans | Construction | 60-89 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 0 | 0
Commercial real estate loans | Construction | Greater than 90 days past due (non-accrual) 2 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 2,733 | 5,134
Residential loans | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 1,264 | 926
Current | 114,229 | 109,862
Total loans | $ 115,493 | $ 110,788
Non-accrual loans to total loans | 0.20% | 0.30%
Residential loans | Home equity | 30-59 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 999 | $ 646
Residential loans | Home equity | 60-89 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 0 | 0
Residential loans | Home equity | Greater than 90 days past due (non-accrual) 2 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 265 | 280
Residential loans | Other residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 0 | 0
Current | 73,721 | 73,035
Total loans | $ 73,721 | $ 73,035
Non-accrual loans to total loans | 0.00% | 0.00%
Residential loans | Other residential | 30-59 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 0 | $ 0
Residential loans | Other residential | 60-89 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 0 | 0
Residential loans | Other residential | Greater than 90 days past due (non-accrual) 2 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 0 | 0
Consumer loans | Installment and other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 194 | 284
Current | 17,545 | 16,504
Total loans | $ 17,739 | $ 16,788
Non-accrual loans to total loans | 0.20% | 0.60%
Consumer loans | Installment and other consumer | 30-59 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 148 | $ 180
Consumer loans | Installment and other consumer | 60-89 days past due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | 4 | 0
Consumer loans | Installment and other consumer | Greater than 90 days past due (non-accrual) 2 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans past due | $ 42 | $ 104

X
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