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Note 3 - Loans (Details Textual) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($)
Number of Loan Portfolio Segments | 3 |  |
Bank Overdrafts | $ 1,280 |  | $ 1,410
Deferred Loans Fees | $ 3,750 | $ 3,940 |

X
- Definition Represents the amount of deferred loan fees. + References No definition available. + Details
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Namespace Prefix: | fcbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the number of loan portfolio segments. + References No definition available. + Details
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Namespace Prefix: | fcbc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Carrying value as of the balance sheet date of payments made in excess of existing cash balances, which will be honored by the bank but reflected as a loan to the entity. Overdrafts generally have a very short time frame for correction or repayment and are therefore more similar to short-term bank financing than trade financing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1243-112600 + Details
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