Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Fair value (in Dollars)	$ 6,628	$ 1,570
Fair Value, Inputs, Level 3 [Member] \| Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Fair value (in Dollars)	$ 6,628	$ 1,570
Valuation technique	Discounted appraisals	Discounted appraisals
Unobservable inputs	Marketability discount	Marketability discount
Fair Value, Inputs, Level 3 [Member] \| OREO [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Fair value (in Dollars)	$ 5,526	$ 14,445
Valuation technique	Discounted appraisals	Discounted appraisals
Unobservable inputs	Marketability discount	Marketability discount
Minimum [Member] \| Fair Value, Inputs, Level 3 [Member] \| Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Marketability discount	0.00%	0.00%
Minimum [Member] \| Fair Value, Inputs, Level 3 [Member] \| OREO [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Marketability discount	2.30%	1.30%
Maximum [Member] \| Fair Value, Inputs, Level 3 [Member] \| Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Marketability discount	8.30%	6.00%
Maximum [Member] \| Fair Value, Inputs, Level 3 [Member] \| OREO [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Marketability discount	26.90%	19.90%
Weighted Average [Member] \| Fair Value, Inputs, Level 3 [Member] \| Impaired Loans [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Marketability discount	7.90%	1.00%
Weighted Average [Member] \| Fair Value, Inputs, Level 3 [Member] \| OREO [Member]
Note 19 - Fair Value Measurements (Details) - Quantitative Information about Unobservable Inputs for Assets Measured on a Nonrecurring Basis Using Level 3 Measurements [Line Items]
Marketability discount	6.50%	6.20%

This item represents a description of the valuation technique used to measure fair value using significant unobservable inputs (Level 3) as applied to the identified category of asset.

No definition available.

+ Details

Name:	ffkt_FairValueDescriptionValuationTechnique
Namespace Prefix:	ffkt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Namespace Prefix:	ffkt_
Data Type:	xbrli:stringItemType
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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_AssetsFairValueDisclosureNonrecurring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Description of the inputs and valuation technique(s) used to measure fair value.

+ References

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