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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items] |  |  |
Assets managed by the Company | $ 706,000,000 |  |
Assets | 2,602,514,000 | 2,728,867,000 |
Number of business segment | 1 |  |
Carrying value and maximum potential loss exposure of VIEs | 2,890,000 | 3,040,000 |
Special assets staff reviews loans, amount | 250,000 |  |
Loan payments delinquency period beyond which loan is considered non-accrual | 90 days |  |
TDRs evaluated for specific reserve based on collateral or net present value method | 250,000 |  |
TDRs subject to resrve based on historical loss rate | 250,000 |  |
Operating lease term | 20 years |  |
Reporting units | 2 |  |
Carrying value and maximum potential loss of equity investments | 786,000 | 782,000 |
Each share convertible into shares | 69 |  |
Minimum time for conversion | 5 years |  |
Date for redeem shares at face value | May 20, 2014 |  |
Series A Preferred Stock |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Dividend Rate | 6.00% |  |
Number of Series A Noncumulative Preferred Stock Shares | 15,251 | 17,421 | 18,921
Investment in FHLB of Atlanta |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Investment owned, at cost | 10,720,000 | 11,300,000 |
FRB Richmond Stock |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Investment owned, at cost | $ 5,580,000 | $ 5,570,000 |
Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Loan delinquent period | 30 days |  |
Long-term investments in various entities, ownership interests | 20.00% |  |
Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Long-term investments in various entities, ownership interests | 50.00% |  |
Furniture, Fixtures and Equipment | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Premises and equipment, estimated useful life | 5 years |  |
Furniture, Fixtures and Equipment | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Premises and equipment, estimated useful life | 10 years |  |
Software, Hardware, and Data Handling Equipment | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Premises and equipment, estimated useful life | 3 years |  |
Software, Hardware, and Data Handling Equipment | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Premises and equipment, estimated useful life | 5 years |  |
Building and Building Improvements | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Premises and equipment, estimated useful life | 10 years |  |
Building and Building Improvements | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Premises and equipment, estimated useful life | 40 years |  |
Land Improvements |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Premises and equipment, estimated useful life | 20 years |  |
Consumer Loan |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Loans charged against the allowance for loan losses, past due days | 120 days |  |
Consumer Loan | Residential Real Estate |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Loans charged against the allowance for loan losses, past due days | 180 days |  |
Consumer Loan | Unsecured Loan |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Loans charged against the allowance for loan losses, past due days | 90 days |  |
Other Loans |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Loans charged against the allowance for loan losses, past due days | 120 days |  |
First Community Bank |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of locations the Company provides services | 71 |  |
GreenPoint Insurance Group |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of locations the Company provides services | 9 |  |

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