This item represents the depreciated percentage of available-for-sale investments in a loss position from amortized cost.

No definition available.

+ Details

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

- Definition

Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563

+ Details

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

- Definition

Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

+ Details

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

- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563

+ Details

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

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_MunicipalNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=fcap_USGovernmentAgencyMortgagebackedCMOMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 2 - Investment Securities (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value, Total					$ 0
Available-for-Sale, Securities in Unrealized Loss Positions, Depreciation from Amortized Cost Percentage	3.40%		3.40%
Municipal Notes [Member]
Debt Securities, Available-for-sale, Realized Gain	$ 211,000		$ 218,000
Debt Securities, Available-for-sale, Realized Loss	$ 307,000		307,000
U.S Government Agency Mortgage-backed CMO [Member]
Debt Securities, Available-for-sale, Realized Gain		$ 58,000		$ 3,000
Debt Securities, Available-for-sale, Realized Loss			$ 6,000