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Certificates of Deposit (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Banking and Thrift [Abstract]      
Certificates of deposit of less than $100,000 $ 274,621 $ 277,225 $ 398,689
Certificates $100,000 to $250,000 364,530 345,241 238,429
Certificates $250,000 and over 71,787 67,513 75,358
Total certificates of deposit $ 710,938 $ 689,979 $ 712,476