XML 82 R51.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Investment Securities (Details Textual) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2012 Security | Sep. 30, 2011 | Sep. 30, 2012 Security | Sep. 30, 2011 | Dec. 31, 2011 Security
Investment Securities (Textual) [Abstract] |  |  |  |  |
Carrying value of securities pledged | $ 303,620,000 |  | $ 303,620,000 |  | $ 288,800,000
Number of securities in an unrealized loss position | 25 |  | 25 |  | 28
Percentage of combined depreciation of the combined reported value of the aggregate securities portfolio | 3.16% |  | 3.16% |  | 4.51%
OTTI charges incurred | 942,000 | 0 | 942,000 | 0 |
Reduced severity rate | 15.00% |  | 15.00% |  |
Severity rate reduction period | 7 years |  | 7 years |  |
Number of held-to-maturity securities in a continuous unrealized loss position | 0 |  | 0 |  | 0
Federal Home Loan Bank [Member] |  |  |  |  |
Investment Securities (Textual) [Abstract] |  |  |  |  |
Investment owned at fair value | 11,530,000 |  | 11,530,000 |  | 10,820,000
Federal Reserve Bank Richmond Stock [Member] |  |  |  |  |
Investment Securities (Textual) [Abstract] |  |  |  |  |
Investment owned at fair value | 5,690,000 |  | 5,690,000 |  | 4,780,000
Mortgage-backed securities Non-Agency Alt-A residential [Member] |  |  |  |  |
Investment Securities (Textual) [Abstract] |  |  |  |  |
OTTI charges incurred | 0 | 210,000 | 0 | 737,000 |
Voluntary constant prepayment rate | 5.00% |  | 5.00% |  |
Constant default rate scenario | 21.00% |  | 21.00% |  |
Remaining underlying mortgages default period | 3 years |  | 3 years |  |
Severity rate | 75.00% |  | 75.00% |  |
Equity Securities [Member] |  |  |  |  |
Investment Securities (Textual) [Abstract] |  |  |  |  |
OTTI charges incurred | $ 0 | $ 0 | $ 0 | $ 0 |

X
- Definition Carrying value of securities pledged. + References No definition available. + Details
Name: | fcbc_CarryingValueOfSecuritiesPledged
Namespace Prefix: | fcbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Constant default rate scenario. + References No definition available. + Details
Name: | fcbc_ConstantDefaultRateScenario
Namespace Prefix: | fcbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Number of held to maturity securities in a continuous unrealized loss position. + References No definition available. + Details
Name: | fcbc_NumberOfHeldToMaturitySecuritiesInContinuousUnrealizedLossPosition
Namespace Prefix: | fcbc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of securities in an unrealized loss position. + References No definition available. + Details
Name: | fcbc_NumberOfSecuritiesInUnrealizedLossPosition
Namespace Prefix: | fcbc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other than temporary impairment charges incurred. + References No definition available. + Details
Name: | fcbc_OtherThanTemporaryImpairmentChargesIncurred
Namespace Prefix: | fcbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of combined depreciation of the combined reported value of the aggregate securities portfolio. + References No definition available. + Details
Name: | fcbc_PercentageOfCombinedDepreciationOfCombinedReportedValueOfAggregateSecuritiesPortfolio
Namespace Prefix: | fcbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reduced severity rate. + References No definition available. + Details
Name: | fcbc_ReducedSeverityRate
Namespace Prefix: | fcbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Remaining underlying mortgages default period. + References No definition available. + Details
Name: | fcbc_RemainingUnderlyingMortgagesDefaultPeriod
Namespace Prefix: | fcbc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Severity rate. + References No definition available. + Details
Name: | fcbc_SeverityRate
Namespace Prefix: | fcbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Severity rate reduction period. + References No definition available. + Details
Name: | fcbc_SeverityRateReductionPeriod
Namespace Prefix: | fcbc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Voluntary constant prepayment rate. + References No definition available. + Details
Name: | fcbc_VoluntaryConstantPrepaymentRate
Namespace Prefix: | fcbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph 2, 3 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Paragraph Column C -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C.Column C.7) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611225-123010 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph Column E -Article 12 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14.Column E.2,3) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611322-123010 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Paragraph 7 -Article 12 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12.Column C.3,4) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611133-123010 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 13 -Paragraph 6 -Article 12 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 13 -Paragraph Column C -Article 12 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column C -Article 12 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 5 -Subparagraph (SX 210.12-13.Column C.6) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611282-123010 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph 3, 4 -Article 12 + Details
Name: | us-gaap_InvestmentOwnedAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant