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Borrowings - Amount of FHLB of Indianapolis/Pittsburgh Stock Purchased, Collateral Pledged and Assets Related to MICO's/Atlantic States Agreement (Detail) - Atlantic States [Member] - FHLB of Pittsburgh [Member]
Dec. 31, 2019
USD ($)
Amount of FHLB of Indianapolis/Pittsburgh stock purchased, collateral pledged and assets related to MICO's/Atlantic States Agreement  
FHLB stock purchased and owned $ 1,639,200
Collateral pledged, at par 36,370,886
Borrowing capacity currently available $ 240,569