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Cash and Due from Banks Cash and Due from Banks (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash and Cash Equivalents [Line Items]      
Restricted Cash and Cash Equivalents, Current $ 18,038 $ 14,564 $ 8,944
Cash, Uninsured Amount $ 18,400