Loans and Allowance for Loan Losses - Additional Information (Detail) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	$ 294,478,000	$ 286,236,000
Loans purchased for related party	7,427,000
Loans, related party	6,549,000	6,084,000
Loan portfolio risk factor	1.18	1.15
Days loans are past due to be nonperforming loans	90 days
Allowance for loan losses related to TDRs modified	0	73,000
Charge Off Treatment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal charge-offs	0	0
Qualitative Factor Economic Condition
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan portfolio risk factor	1.20	1.20
Qualitative Factor Past Due Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan portfolio risk factor	1.20	1.20
Qualitative Factor Other Internal and External Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan portfolio risk factor	1.30	1.20
Overall Qualitative Factor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in estimated allowance for loan losses	471,000	419,000
Director of the Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans purchased for related party	574,000
Loans, related party	951,000.0	1,000,000
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans secured by residential properties, loan-to-value ratios	90.00%
Recorded investment in loans	3,100,000
Loans serviced for the benefit of others	200,000	210,000
Home Equity and Second Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in allowance for loan losses due to change in estimating method	1,100,000
Classified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in estimated allowance for loan losses	$ 521,000	$ 664,000

Amount of Loans Serviced for Others

No definition available.

Name:	fcap_AmountOfLoansServicedForOthers
Namespace Prefix:	fcap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Financing Receivable, Allowance for Credit Losses, Net Charge Offs

+ References

No definition available.

+ Details

Name:	fcap_FinancingReceivableAllowanceForCreditLossesNetChargeOffs
Namespace Prefix:	fcap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Financing Receivable Allowance For Credit Losses Risk Factor

+ References

No definition available.

+ Details

Name:	fcap_FinancingReceivableAllowanceForCreditLossesRiskFactor
Namespace Prefix:	fcap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Loan To Value Ratio

+ References

No definition available.

+ Details

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

- Definition

Payment Term over which a Note Receivable is Considered Non-performing

+ References

No definition available.

+ Details

Name:	fcap_PaymentTermOverWhichNoteReceivableIsConsideredNonperforming
Namespace Prefix:	fcap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 65

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7484272&loc=SL7484277-172609

+ Details

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

- 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 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

Reference 2: 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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

+ Details

Name:	us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
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=28368275&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesEffectOfChangeInMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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=28367877&loc=d3e4428-111522

+ Details

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

- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: 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(e))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph e

-Article 9

+ Details

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

- Definition

Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

+ References

+ Details

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