Note 4 - Loans and Allowance for Loan Losses (Details Textual)	3 Months Ended	12 Months Ended
Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Purchased Credit Impaired Loans [Member]
Allowance for Credit Losses, Change in Method of Calculating Impairment	$ 6,000		$ 0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	6,000	$ 0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses, Decreases	0	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,100,000		1,600,000
Classified Loans [Member]
Allowance for Loan and Lease Losses, Period Increase (Decrease)	$ 581,000		410,000
Minimum [Member]
Performance Period	180 days
Other than Consumer Portfolio Segment [Member]
Number of Loans	9
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 388,000
Bank Overdrafts [Member]
Loans Charge-off Period	45 days
Qualitative Factor Past Due Loans [Member]
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method	$ 1,600,000		$ 1,400,000
Overall Qualitative Factor [Member]
Financing Receivable, Allowance for Credit Losses Risk Factor	1.18		1.18
Allowance for Loan and Lease Losses, Period Increase (Decrease)	$ 480,000		$ 457,000
Loans Charge-off Period	90 days
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 223,000	1,256,000
Collateral Dependent Loans, Value of Significant Properties	200,000
Mortgage Loans in Process of Foreclosure, Amount	$ 796,000
Financing Receivable, Allowance for Credit Losses, Loss Factor Increase	0.25%
Financing Receivable, Allowance for Credit Losses, Loss Factor	20.00%
Impaired Financing Receivable, Interest Income, Cash Basis Method	$ 0	$ 0
Loans and Leases Receivable, Impaired, Commitment to Lend	$ 0		$ 0
Financing Receivable, Modifications, Number of Contracts	0	0
Troubled Debt Restructuring, Principal Charge-offs	$ 0	$ 0
Troubled Debt Restructuring, Specific Allowance	$ 0	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0		0

Represents the collateral dependent loans value of significant properties.

No definition available.

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

- Definition

Percentage of loss factor related to financing receivables.

+ References

No definition available.

+ Details

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Namespace Prefix:	fcap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of increase during the period in of loss factors related to financing receivables.

+ References

No definition available.

+ Details

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Namespace Prefix:	fcap_
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Balance Type:	na
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- Definition

Represents financing receivable allowance for credit losses risk factor.

+ References

No definition available.

+ Details

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Namespace Prefix:	fcap_
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- Definition

Represents the period of time for a loan charge off.

+ References

No definition available.

+ Details

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- Definition

Represents the number of loans.

+ References

No definition available.

+ Details

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- Definition

Representing the performance period.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of principal charge-offs for troubled debt restructuring.

+ References

No definition available.

+ Details

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Namespace Prefix:	fcap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the amount of specific allowance for troubled debt restructuring.

+ References

No definition available.

+ Details

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Namespace Prefix:	fcap_
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Balance Type:	credit
Period Type:	duration

- Definition

Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings.

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) of allowance reserve for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Period Type:	duration

- Definition

Amount of reduction in the reserve for loans impairments as a result of current information and events which result in it being probable that estimated cash flows will be significantly higher than previously expected or because actual cash flows are significantly greater than cash flows previously expected for loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

No definition available.

+ Details

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- Definition

The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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Period Type:	instant

- Definition

Amount of expense related to loan loss not accounted for as debt securities, with evidence of deterioration of credit quality.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

The effect of a change in method or methods for calculating the allowance for credit losses on the current period provision.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

+ Details

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Period Type:	duration

- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

+ Details

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

- Definition

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=66008989&loc=SL6953676-111524

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524

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Period Type:	duration

- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

- Definition

Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL49126937-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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