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Securities Sold Under Agreements to Repurchase
 3 Months Ended
Mar. 31, 2021
Brokers and Dealers [Abstract]  
Securities Sold Under Agreements to Repurchase Securities Sold Under Agreements to Repurchase
Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company is required to pledge collateral with value sufficient to fully collateralized borrowings. Company securities pledged were as follows by collateral type and maturity as of: 
(In thousands)March 31, 2021December 31, 2020
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. government sponsored entities$120,071 $137,268