Note 5 - Loans and Allowance for Loan Losses - Recorded Investments in Loans (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Principal loan balance	$ 412,211,000	$ 383,703,000
Accrued interest receivable	1,365,000	1,224,000
Net deferred loan origination fees and costs	1,041,000	837,000
Recorded investment in loans	414,617,000	385,764,000
Real Estate Mortgage Portfolio Segment [Member] \| Real Estate Loan [Member]
Principal loan balance	136,399,000	137,842,000
Accrued interest receivable	474,000	455,000
Net deferred loan origination fees and costs	87,000	80,000
Recorded investment in loans	136,960,000	138,377,000
Real Estate Mortgage Portfolio Segment [Member] \| Land Loan [Member]
Principal loan balance	18,198,000	13,895,000
Accrued interest receivable	94,000	42,000
Net deferred loan origination fees and costs	17,000	14,000
Recorded investment in loans	18,309,000	13,951,000
Real Estate Mortgage Portfolio Segment [Member] \| Construction Loans [Member]
Principal loan balance	20,995,000	19,445,000
Accrued interest receivable	49,000	44,000
Net deferred loan origination fees and costs	(10,000)
Recorded investment in loans	21,034,000	19,489,000
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Principal loan balance	100,133,000	96,462,000
Accrued interest receivable	249,000	249,000
Net deferred loan origination fees and costs	(42,000)	(42,000)
Recorded investment in loans	100,340,000	96,669,000
Commercial Portfolio Segment [Member]
Principal loan balance	34,114,000	24,056,000
Accrued interest receivable	87,000	67,000
Net deferred loan origination fees and costs	2,000	3,000
Recorded investment in loans	34,203,000	24,126,000
Consumer Portfolio Segment [Member] \| Home Equity and Second Mortgage [Member]
Principal loan balance	49,802,000	42,908,000
Accrued interest receivable	189,000	141,000
Net deferred loan origination fees and costs	987,000	782,000
Recorded investment in loans	50,978,000	43,831,000
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member]
Principal loan balance	52,570,000	49,095,000
Accrued interest receivable	223,000	226,000
Net deferred loan origination fees and costs
Recorded investment in loans	$ 52,793,000	$ 49,321,000

Represents loans and leases receivable accrued interest.

No definition available.

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Namespace Prefix:	fcap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Represents the loans and leases receivable principal balance.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

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

+ References

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

+ Details

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- 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://www.xbrl.org/2003/role/presentationRef
-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

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