Borrowings - Amount of FHLB of Indianapolis/Pittsburgh Stock Purchased, Collateral Pledged and Assets Related to MICO's/Atlantic States Agreement (Detail) (Lines of Credit [Member], USD $)	Jun. 30, 2013
MICO [Member] | Indianapolis [Member]
Amount of FHLB of Indianapolis/Pittsburgh stock purchased, collateral pledged and assets related to MICO's/Atlantic States Agreement
FHLB stock purchased and owned as part of the agreement	$ 252,100
Collateral pledged, at par (carrying value 2,936,074 for MICO and 15,878,619 for Atlantic States)	3,700,000
Borrowing capacity currently available	2,544,684
Atlantic States [Member] | Pittsburgh [Member]
Amount of FHLB of Indianapolis/Pittsburgh stock purchased, collateral pledged and assets related to MICO's/Atlantic States Agreement
FHLB stock purchased and owned as part of the agreement	960,300
Collateral pledged, at par (carrying value 2,936,074 for MICO and 15,878,619 for Atlantic States)	19,000,000
Borrowing capacity currently available	$ 878,619