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EMPLOYEE BENEFIT PLANS - Employee Stock Ownership Plan (Details) - Pioneer Bank ESOP - USD ($)
3 Months Ended
Jul. 17, 2019
Mar. 31, 2026
Mar. 31, 2025
Employee Stock Ownership Plan      
Number of shares purchased by the ESOP as a result of the Company granting a loan to the ESOP 1,018,325    
Average purchase price of shares (in dollars per share) $ 13.4    
Term of loan granted by Company to the ESOP 20 years    
Balance of ESOP loan   $ 10,100,000  
Number of shares committed to be released annually under the ESOP 50,916    
Compensation expense   $ 178,000 $ 148,000
Shares held by the ESOP include the following:      
Allocated   306,641 270,692
Committed to be allocated   12,729 12,729
Unallocated   649,184 700,100
Total shares   968,554 983,521