SECURITIES - Schedule of Restricted Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]
Restricted equity securities, at cost	$ 5,108	$ 5,684
Federal Home Loan Bank stock
Debt and Equity Securities, FV-NI [Line Items]
Restricted equity securities, at cost	4,183	4,759
First National Banker’s Bankshares, Inc. stock
Debt and Equity Securities, FV-NI [Line Items]
Restricted equity securities, at cost	675	675
Pacific Coast Banker’s Bank stock
Debt and Equity Securities, FV-NI [Line Items]
Restricted equity securities, at cost	$ 250	$ 250