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FDIC Loss Share Agreement Receivable (Details Textual) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Jun. 08, 2012 | Dec. 31, 2011
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FDIC Loss Share Agreement Receivable (Textual) [Abstract] |  |  |
Percentage Of Loss Sharing By Fdic |  | 80.00% |
FDIC receivable under loss share agreements | $ 52,067 |  |

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- Details
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Namespace Prefix: | fcbc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of loss sharing by fdic. + References No definition available. + Details
Name: | fcbc_PercentageOfLossSharingByFdic
Namespace Prefix: | fcbc_
Data Type: | num:percentItemType
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- Definition Carrying amount of receivable assets originating from the indemnification agreement with the Federal Deposit Insurance Corporation (FDIC), in which the FDIC is to partially cover losses. + References No definition available. + Details
Name: | us-gaap_FDICIndemnificationAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant