Note 7 - Foreclosed Real Estate - Net Loss on Foreclosed Real Estate (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net (gain) loss on sales	$ (3)	$ (30)	$ 15
Direct write-downs	263	80	100
Operating expenses, net of income	56	94	47
	$ 316	$ 144	$ 162

The amount of operating expenses from foreclosed real estate, net of related income.

No definition available.

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