Supplemental Disclosure for Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings:
Net income attributable to First Capital, Inc.	$ 1,297	$ 1,194
Shares:
Weighted average common shares outstanding	2,784,088	2,784,997
Net income attributable to First Capital, Inc. per common share, basic and diluted	$ 0.47	$ 0.43