Detailed Amount of Gross Loans Segregated by Loan Grade and Class (Detail) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
In Thousands, unless otherwise specified |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | $390,321 | $392,668 |
Real Estate Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 314,424 | 307,716 |
Real Estate Loans | Land Development and Construction | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 36,309 | 27,224 |
Real Estate Loans | Farmland | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 29,597 | 29,634 |
Real Estate Loans | 1-4 Family Mortgages | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 101,928 | 105,489 |
Real Estate Loans | Commercial Real Estate | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 146,590 | 145,369 |
Business Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 49,869 | 57,121 |
Business Loans | Commercial and Industrial Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 48,616 | 55,813 |
Business Loans | Farm Production and Other Farm Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 1,253 | 1,308 |
Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 26,028 | 27,831 |
Consumer Loans | Credit Cards | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 1,014 | 1,087 |
Consumer Loans | Other Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 25,014 | 26,744 |
Satisfactory 1, 2, 3, 4 | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 345,074 | 343,960 |
Satisfactory 1, 2, 3, 4 | Real Estate Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 272,507 | 262,772 |
Satisfactory 1, 2, 3, 4 | Real Estate Loans | Land Development and Construction | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 34,387 | 25,165 |
Satisfactory 1, 2, 3, 4 | Real Estate Loans | Farmland | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 25,230 | 25,160 |
Satisfactory 1, 2, 3, 4 | Real Estate Loans | 1-4 Family Mortgages | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 85,080 | 87,108 |
Satisfactory 1, 2, 3, 4 | Real Estate Loans | Commercial Real Estate | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 127,810 | 125,339 |
Satisfactory 1, 2, 3, 4 | Business Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 47,183 | 54,169 |
Satisfactory 1, 2, 3, 4 | Business Loans | Commercial and Industrial Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 45,930 | 52,871 |
Satisfactory 1, 2, 3, 4 | Business Loans | Farm Production and Other Farm Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 1,253 | 1,298 |
Satisfactory 1, 2, 3, 4 | Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 25,384 | 27,019 |
Satisfactory 1, 2, 3, 4 | Consumer Loans | Credit Cards | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 1,006 | 1,077 |
Satisfactory 1, 2, 3, 4 | Consumer Loans | Other Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 24,378 | 25,942 |
Special Mention 5,6 | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 11,542 | 21,295 |
Special Mention 5,6 | Real Estate Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 10,913 | 11,522 |
Special Mention 5,6 | Real Estate Loans | Land Development and Construction | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | ' | 192 |
Special Mention 5,6 | Real Estate Loans | Farmland | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 825 | 744 |
Special Mention 5,6 | Real Estate Loans | 1-4 Family Mortgages | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 4,334 | 4,671 |
Special Mention 5,6 | Real Estate Loans | Commercial Real Estate | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 5,754 | 5,915 |
Special Mention 5,6 | Business Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 425 | 434 |
Special Mention 5,6 | Business Loans | Commercial and Industrial Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 425 | 426 |
Special Mention 5,6 | Business Loans | Farm Production and Other Farm Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | ' | 8 |
Special Mention 5,6 | Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 204 | 193 |
Special Mention 5,6 | Consumer Loans | Other Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 204 | 193 |
Substandard 7 | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 31,647 | 34,414 |
Substandard 7 | Real Estate Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 31,004 | 33,422 |
Substandard 7 | Real Estate Loans | Land Development and Construction | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 1,922 | 1,867 |
Substandard 7 | Real Estate Loans | Farmland | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 3,542 | 3,730 |
Substandard 7 | Real Estate Loans | 1-4 Family Mortgages | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 12,514 | 13,710 |
Substandard 7 | Real Estate Loans | Commercial Real Estate | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 13,026 | 14,115 |
Substandard 7 | Business Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 233 | 418 |
Substandard 7 | Business Loans | Commercial and Industrial Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 233 | 416 |
Substandard 7 | Business Loans | Farm Production and Other Farm Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | ' | 2 |
Substandard 7 | Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 410 | 574 |
Substandard 7 | Consumer Loans | Credit Cards | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 8 | 10 |
Substandard 7 | Consumer Loans | Other Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 402 | 564 |
Doubtful 8 | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 2,053 | 2,142 |
Doubtful 8 | Business Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 2,028 | 2,100 |
Doubtful 8 | Business Loans | Commercial and Industrial Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 2,028 | 2,100 |
Doubtful 8 | Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 25 | 42 |
Doubtful 8 | Consumer Loans | Other Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 25 | 42 |
Loss 9 | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 5 | 3 |
Loss 9 | Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | 5 | 3 |
Loss 9 | Consumer Loans | Other Consumer Loans | ' | ' |
Financing Receivable, Recorded Investment [Line Items] | ' | ' |
Total gross loans | $5 | $3 |