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RELATED-PARTY TRANSACTIONS - Related Party Transactions (Details) - Officers and Directors - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Related Party Transaction [Line Items]    
Loans to certain officers and directors and their related interests $ 249 $ 249
Deposits from principal officers, directors, and their related interests $ 2,200 $ 2,400