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SECURITIES - Trading Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities $ 10,092 $ 10,366
Corporate equity securities    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities 6,484 6,715
Mutual funds    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities 2,383 2,566
Certificates of deposit    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities 663 506
Corporate notes and bonds    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities $ 562 $ 579