Allowance for Loan Losses - Risk Category of Loans by Class of Loans (Detail) (USD $) | Mar. 31, 2014 | Dec. 31, 2013 |
In Thousands, unless otherwise specified |
Not Rated [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | $164,334 | $161,584 |
Not Rated [Member] | Commercial : Commercial and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 252 | 83 |
Not Rated [Member] | Commercial: Real estate [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Not Rated [Member] | Commercial: Five or more family [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 185 | 188 |
Not Rated [Member] | Commercial: Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Not Rated [Member] | Commercial: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 12 | 0 |
Not Rated [Member] | Mortgage [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 29,973 | 29,977 |
Not Rated [Member] | Mortgage warehouse [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 118,213 | 115,443 |
Not Rated [Member] | Residential Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 365 | 503 |
Not Rated [Member] | Residential Construction: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 286 | 289 |
Not Rated [Member] | Home equity [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 10,943 | 11,116 |
Not Rated [Member] | Consumer and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 4,105 | 3,985 |
Pass [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 110,881 | 114,212 |
Pass [Member] | Commercial : Commercial and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 17,072 | 17,159 |
Pass [Member] | Commercial: Real estate [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 69,582 | 71,943 |
Pass [Member] | Commercial: Five or more family [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 11,025 | 11,706 |
Pass [Member] | Commercial: Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 4,228 | 3,949 |
Pass [Member] | Commercial: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 5,054 | 5,296 |
Pass [Member] | Mortgage [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 3,109 | 3,323 |
Pass [Member] | Mortgage warehouse [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Pass [Member] | Residential Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Pass [Member] | Residential Construction: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Pass [Member] | Home equity [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 128 | 133 |
Pass [Member] | Consumer and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 683 | 703 |
Special Mention [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 7,391 | 7,995 |
Special Mention [Member] | Commercial : Commercial and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 465 | 380 |
Special Mention [Member] | Commercial: Real estate [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 6,263 | 6,705 |
Special Mention [Member] | Commercial: Five or more family [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Special Mention [Member] | Commercial: Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Special Mention [Member] | Commercial: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 105 | 106 |
Special Mention [Member] | Mortgage [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 460 | 471 |
Special Mention [Member] | Mortgage warehouse [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Special Mention [Member] | Residential Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Special Mention [Member] | Residential Construction: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Special Mention [Member] | Home equity [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 98 | 101 |
Special Mention [Member] | Consumer and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 232 |
Substandard [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 13,695 | 13,098 |
Substandard [Member] | Commercial : Commercial and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 42 | 18 |
Substandard [Member] | Commercial: Real estate [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 5,145 | 5,111 |
Substandard [Member] | Commercial: Five or more family [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 3,750 | 3,508 |
Substandard [Member] | Commercial: Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Substandard [Member] | Commercial: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 2,770 | 2,747 |
Substandard [Member] | Mortgage [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 1,946 | 1,667 |
Substandard [Member] | Mortgage warehouse [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Substandard [Member] | Residential Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Substandard [Member] | Residential Construction: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Substandard [Member] | Home equity [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 42 | 47 |
Substandard [Member] | Consumer and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 23 | 23 |
Doubtful [Member] | Commercial : Commercial and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 23 | 0 |
Doubtful [Member] | Commercial: Real estate [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 23 |
Doubtful [Member] | Commercial: Five or more family [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | Commercial: Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | Commercial: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | Mortgage [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | Mortgage warehouse [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | Residential Construction [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | Residential Construction: Land [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | Home equity [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | 0 | 0 |
Doubtful [Member] | Consumer and other [Member] | ' | ' |
Recent analysis performed for risk category of loans | ' | ' |
Recorded investment in loans | $0 | $0 |