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EQUITY INVESTMENTS - Equity Investments (Details)
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2022
USD ($)
fund
$ / shares
Dec. 31, 2021
USD ($)
Equity investments    
Equity investments, total $ 17,835 $ 17,727
Number of private investments | fund 2  
Gain on sale of investments $ 1,400  
Federal Reserve stock    
Equity investments    
Equity investments, total 9,271 9,271
Federal Home Loan Bank Stock    
Equity investments    
Equity investments, total $ 3,991 3,967
Par value (in dollars per share) | $ / shares $ 100  
The Independent Bankers Financial Corporation stock    
Equity investments    
Equity investments, total $ 141 141
Community Reinvestment Act investments    
Equity investments    
Equity investments, total 4,432 4,348
Unfunded commitments $ 7,900 $ 6,300
U.S. agency securities:    
Equity investments    
Par value (in dollars per share) | $ / shares $ 100