Risk Category of Loans by Class of Loans (Excluding Mortgage Loans Held for Sale) (Detail) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
In Thousands, unless otherwise specified |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | $607,123 | $579,983 |
Unearned discount | 311 | 360 |
Loans, net of Unearned discount | 606,812 | 579,623 |
Pass | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 592,644 | 562,172 |
Special Mention | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 886 | 5,149 |
Substandard | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 13,593 | 12,662 |
Doubtful | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 0 | 0 |
Commercial Real Estate | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 345,839 | 331,629 |
Unearned discount | 196 | 236 |
Loans, net of Unearned discount | 345,643 | 331,393 |
Commercial Real Estate | Pass | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 333,981 | 316,573 |
Commercial Real Estate | Special Mention | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 371 | 4,084 |
Commercial Real Estate | Substandard | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 11,487 | 10,972 |
Commercial Real Estate | Doubtful | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 0 | 0 |
Mortgage Real Estate | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 155,715 | 147,245 |
Unearned discount | 96 | 97 |
Loans, net of Unearned discount | 155,619 | 147,148 |
Mortgage Real Estate | Pass | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 153,781 | 145,787 |
Mortgage Real Estate | Special Mention | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 116 | 32 |
Mortgage Real Estate | Substandard | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 1,818 | 1,426 |
Mortgage Real Estate | Doubtful | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 0 | 0 |
Installment and Other | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 21,936 | 19,764 |
Unearned discount | 0 | 0 |
Loans, net of Unearned discount | 21,936 | 19,764 |
Installment and Other | Pass | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 21,870 | 19,725 |
Installment and Other | Special Mention | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 0 | 0 |
Installment and Other | Substandard | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 66 | 39 |
Installment and Other | Doubtful | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 0 | 0 |
Commercial,Financial and Agriculture | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 83,633 | 81,345 |
Unearned discount | 19 | 27 |
Loans, net of Unearned discount | 83,614 | 81,318 |
Commercial,Financial and Agriculture | Pass | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 83,012 | 80,087 |
Commercial,Financial and Agriculture | Special Mention | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 399 | 1,033 |
Commercial,Financial and Agriculture | Substandard | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | 222 | 225 |
Commercial,Financial and Agriculture | Doubtful | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Loans and leases receivable, gross | $0 | $0 |