Represents the loans and leases receivable principal balance.

No definition available.

Name:	fcap_LoansAndLeasesReceivablePrincipalBalance
Namespace Prefix:	fcap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements.

+ References

No definition available.

+ Details

Name:	us-gaap_LoansAndLeasesReceivableLoansInProcess
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

+ Details

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

- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Definition

Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=fcap_RealEstateMortgagePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fcap_ResidentialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fcap_LandLoanMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fcap_ResidentialConstructionMember
Namespace Prefix:
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fcap_CommercialRealEstateLoanMember
Namespace Prefix:
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fcap_CommercialRealEstateConstructionMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
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Namespace Prefix:
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Note 3 - Loans and Allowance for Loan Losses - Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans	$ 443,176		$ 437,231
Less undisbursed portion of loans in process	(21,013)		(25,020)
Principal loan balance	422,163		412,211
Deferred loan origination fees, net	1,064		1,041
Allowance for loan losses	(3,867)	$ (3,631)	(3,634)	$ (3,526)	$ (3,418)	$ (3,386)
Loans, net	419,360		409,618
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Loans	135,602		136,399
Allowance for loan losses	(688)	(301)	(219)	(212)	(271)	(380)
Real Estate Mortgage Portfolio Segment [Member] \| Land Loan [Member]
Loans	21,334		18,198
Principal loan balance	21,334		18,198
Deferred loan origination fees, net	15		17
Allowance for loan losses	(148)	(156)	(133)	(124)	(109)	(56)
Real Estate Mortgage Portfolio Segment [Member] \| Residential Construction [Member]
Loans	30,495		28,854
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Loans	104,767		100,133
Principal loan balance	104,767		100,133
Deferred loan origination fees, net	(41)		(42)
Allowance for loan losses	(1,306)	(1,520)	(1,622)	(1,583)	(1,585)	(1,670)
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Construction [Member]
Loans	12,387		17,161
Commercial Portfolio Segment [Member]
Loans	33,743		34,114
Principal loan balance	33,743		34,114
Deferred loan origination fees, net	1		2
Allowance for loan losses	(417)	(276)	(291)	(290)	(244)	(198)
Consumer Portfolio Segment [Member] \| Home Equity and Second Mortgage [Member]
Loans	51,283		49,802
Principal loan balance	51,283		49,802
Deferred loan origination fees, net	1,005		987
Allowance for loan losses	(607)	$ (680)	(710)	$ (680)	$ (698)	$ (683)
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Loans	40,435		38,361
Consumer Portfolio Segment [Member] \| Loans Secured by Deposits [Member]
Loans	1,404		1,751
Consumer Portfolio Segment [Member] \| Unsecured Loan [Member]
Loans	3,708		3,744
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member]
Loans	$ 8,018		$ 8,714