Supplemental Disclosure for Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings:
Net income attributable to First Capital, Inc.	$ 1,518	$ 1,210	$ 2,815	$ 2,404
Shares:
Weighted average common shares outstanding	2,757,335	2,784,997	2,770,637	2,784,997
Net income attributable to First Capital, Inc. per common share, basic and diluted	$ 0.55	$ 0.43	$ 1.02	$ 0.86