Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2023	May 08, 2023
Document Information [Line Items]
Entity Central Index Key	0001070296
Entity Registrant Name	FIRST CAPITAL INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2023
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	0-25023
Entity Incorporation, State or Country Code	IN
Entity Tax Identification Number	35-2056949
Entity Address, Address Line One	220 Federal Drive NW
Entity Address, City or Town	Corydon
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	47112
City Area Code	812
Local Phone Number	738-2198
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	FCAP
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		3,359,362