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Short-Term Borrowings - Summary of Repurchase Agreements and Related Collateral Accounted for as Secured Borrowings (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Short Term Borrowings [Abstract]    
Securities of U.S. Government Agencies and mortgage-backed securities of government agencies pledged, fair value $ 40,807 $ 39,058
Repurchase agreements $ 40,605 $ 38,889