Loans and Allowance for Loan Losses - Summary of Recorded Investment Based on Delinquency Status (Details) (USD $) | Sep. 30, 2014 | Dec. 31, 2013 |
In Thousands, unless otherwise specified |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total ending loans balance | $922,514 | $902,299 |
Commercial real estate | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total ending loans balance | 413,625 | 401,591 |
Commercial | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total ending loans balance | 85,543 | 88,646 |
Residential Real Estate | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total ending loans balance | 70,891 | 66,507 |
Home equity loans | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total ending loans balance | 125,318 | 123,076 |
Indirect | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total ending loans balance | 213,450 | 206,323 |
Consumer | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total ending loans balance | 13,687 | 16,156 |
Commercial Credit Exposure | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 478,040 | 467,759 |
Total loans internally credit risk graded | 505,786 | 497,099 |
Total loans not internally credit risk graded | 416,728 | 405,200 |
Total ending loans balance | 922,514 | 902,299 |
Commercial Credit Exposure | Grade 1-Minimal | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 69 | 52 |
Commercial Credit Exposure | Grade 2-Modest | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 4,803 | 37 |
Commercial Credit Exposure | Grade 3-Better than average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 8,722 | 857 |
Commercial Credit Exposure | Grade 4-Average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 348,614 | 23,464 |
Commercial Credit Exposure | Grade 5-Acceptable | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 115,832 | 443,349 |
Commercial Credit Exposure | Grade 6-Special mention | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 5,974 | 5,072 |
Commercial Credit Exposure | Grade 7-Substandard | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 21,772 | 24,268 |
Commercial Credit Exposure | Grade 8-Doubtful | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Grade 9-Loss | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Current loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 411,806 | 398,444 |
Commercial Credit Exposure | 30-59 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 883 | 1,511 |
Commercial Credit Exposure | 60-89 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 269 | 1,722 |
Commercial Credit Exposure | 90 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 3,770 | 3,523 |
Commercial Credit Exposure | Commercial real estate | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 387,350 | 376,218 |
Total loans internally credit risk graded | 413,625 | 401,591 |
Total loans not internally credit risk graded | 0 | 0 |
Total ending loans balance | 413,625 | 401,591 |
Commercial Credit Exposure | Commercial real estate | Grade 1-Minimal | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Commercial real estate | Grade 2-Modest | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 600 | 0 |
Commercial Credit Exposure | Commercial real estate | Grade 3-Better than average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 8,675 | 857 |
Commercial Credit Exposure | Commercial real estate | Grade 4-Average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 284,370 | 22,580 |
Commercial Credit Exposure | Commercial real estate | Grade 5-Acceptable | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 93,705 | 352,781 |
Commercial Credit Exposure | Commercial real estate | Grade 6-Special mention | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 5,520 | 2,146 |
Commercial Credit Exposure | Commercial real estate | Grade 7-Substandard | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 20,755 | 23,227 |
Commercial Credit Exposure | Commercial real estate | Grade 8-Doubtful | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial real estate | Grade 9-Loss | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial real estate | Current loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial real estate | 30-59 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial real estate | 60-89 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial real estate | 90 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 85,149 | 85,339 |
Total loans internally credit risk graded | 85,543 | 88,646 |
Total loans not internally credit risk graded | 0 | 0 |
Total ending loans balance | 85,543 | 88,646 |
Commercial Credit Exposure | Commercial | Grade 1-Minimal | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 69 | 52 |
Commercial Credit Exposure | Commercial | Grade 2-Modest | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 4,203 | 37 |
Commercial Credit Exposure | Commercial | Grade 3-Better than average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 47 | 0 |
Commercial Credit Exposure | Commercial | Grade 4-Average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 61,069 | 271 |
Commercial Credit Exposure | Commercial | Grade 5-Acceptable | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 19,761 | 84,979 |
Commercial Credit Exposure | Commercial | Grade 6-Special mention | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 221 | 2,891 |
Commercial Credit Exposure | Commercial | Grade 7-Substandard | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 173 | 416 |
Commercial Credit Exposure | Commercial | Grade 8-Doubtful | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial | Grade 9-Loss | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial | Current loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial | 30-59 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial | 60-89 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Commercial | 90 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Residential Real Estate | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 5,541 | 6,202 |
Total loans internally credit risk graded | 6,618 | 6,862 |
Total loans not internally credit risk graded | 64,273 | 59,645 |
Total ending loans balance | 70,891 | 66,507 |
Commercial Credit Exposure | Residential Real Estate | Grade 1-Minimal | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Residential Real Estate | Grade 2-Modest | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Residential Real Estate | Grade 3-Better than average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Residential Real Estate | Grade 4-Average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 3,175 | 613 |
Commercial Credit Exposure | Residential Real Estate | Grade 5-Acceptable | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 2,366 | 5,589 |
Commercial Credit Exposure | Residential Real Estate | Grade 6-Special mention | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 233 | 35 |
Commercial Credit Exposure | Residential Real Estate | Grade 7-Substandard | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 844 | 625 |
Commercial Credit Exposure | Residential Real Estate | Grade 8-Doubtful | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Residential Real Estate | Grade 9-Loss | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Residential Real Estate | Current loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 62,336 | 56,390 |
Commercial Credit Exposure | Residential Real Estate | 30-59 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 267 | 64 |
Commercial Credit Exposure | Residential Real Estate | 60-89 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 2 | 960 |
Commercial Credit Exposure | Residential Real Estate | 90 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 1,668 | 2,231 |
Commercial Credit Exposure | Home equity loans | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Total loans internally credit risk graded | 0 | 0 |
Total loans not internally credit risk graded | 125,318 | 123,076 |
Total ending loans balance | 125,318 | 123,076 |
Commercial Credit Exposure | Home equity loans | Grade 1-Minimal | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Grade 2-Modest | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Grade 3-Better than average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Grade 4-Average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Grade 5-Acceptable | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Grade 6-Special mention | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Grade 7-Substandard | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Grade 8-Doubtful | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Grade 9-Loss | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Home equity loans | Current loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 123,280 | 120,359 |
Commercial Credit Exposure | Home equity loans | 30-59 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 123 | 932 |
Commercial Credit Exposure | Home equity loans | 60-89 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 149 | 707 |
Commercial Credit Exposure | Home equity loans | 90 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 1,766 | 1,078 |
Commercial Credit Exposure | Indirect | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Total loans internally credit risk graded | 0 | 0 |
Total loans not internally credit risk graded | 213,450 | 206,323 |
Total ending loans balance | 213,450 | 206,323 |
Commercial Credit Exposure | Indirect | Grade 1-Minimal | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Indirect | Grade 2-Modest | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Indirect | Grade 3-Better than average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Indirect | Grade 4-Average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Indirect | Grade 5-Acceptable | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Indirect | Grade 6-Special mention | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Indirect | Grade 7-Substandard | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Indirect | Grade 8-Doubtful | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Indirect | Grade 9-Loss | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Indirect | Current loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 212,980 | 205,938 |
Commercial Credit Exposure | Indirect | 30-59 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 324 | 332 |
Commercial Credit Exposure | Indirect | 60-89 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 118 | 30 |
Commercial Credit Exposure | Indirect | 90 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 28 | 23 |
Commercial Credit Exposure | Consumer | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Total loans internally credit risk graded | 0 | 0 |
Total loans not internally credit risk graded | 13,687 | 16,156 |
Total ending loans balance | 13,687 | 16,156 |
Commercial Credit Exposure | Consumer | Grade 1-Minimal | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Consumer | Grade 2-Modest | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Consumer | Grade 3-Better than average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Consumer | Grade 4-Average | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Consumer | Grade 5-Acceptable | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total Pass Credits | 0 | 0 |
Commercial Credit Exposure | Consumer | Grade 6-Special mention | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Consumer | Grade 7-Substandard | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Consumer | Grade 8-Doubtful | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Consumer | Grade 9-Loss | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans internally credit risk graded | 0 | 0 |
Commercial Credit Exposure | Consumer | Current loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 13,210 | 15,757 |
Commercial Credit Exposure | Consumer | 30-59 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 169 | 183 |
Commercial Credit Exposure | Consumer | 60-89 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | 0 | 25 |
Commercial Credit Exposure | Consumer | 90 days past due loans not internally risk graded | ' | ' |
Accounts, Notes, Loans and Financing Receivable [Line Items] | ' | ' |
Total loans not internally credit risk graded | $308 | $191 |