XML 76 R84.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Litigation, Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | Mar. 31, 2014
--- | ---
Commitments and Contingencies Disclosure [Line Items] |
Trust preferred securities | $ 15.46

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

X
- Definition Trust preferred securities. + References No definition available. + Details
Name: | fcbc_TrustPreferredSecurities
Namespace Prefix: | fcbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant