Note 4 - Loans and Allowance for Loan Losses (Details) - Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]
Number of Loans	0	8
TDR Identified Current Period [Member] \| Real Estate Mortgage Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		3
Pre-Modification Outstanding Recorded Investment		309
Post-Modification Outstanding Recorded Investment		309
TDR Identified Current Period [Member] \| Real Estate Mortgage Farmland and Other Commercial Enterprises [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1
Pre-Modification Outstanding Recorded Investment		598
Post-Modification Outstanding Recorded Investment		598
TDR Identified Current Period [Member] \| Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1
Pre-Modification Outstanding Recorded Investment		13
Post-Modification Outstanding Recorded Investment		13
TDR Identified Current Period [Member] \| Consumer Secured [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		3
Pre-Modification Outstanding Recorded Investment		16
Post-Modification Outstanding Recorded Investment		16
TDR Identified Current Period [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		8
Pre-Modification Outstanding Recorded Investment		936
Post-Modification Outstanding Recorded Investment		936

Name:	us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=ffkt_TDRIdentifiedCurrentPeriodMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: