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SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES (Details)
 12 Months Ended
Dec. 31, 2022
USD ($)
banking_offices
segment
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Jan. 01, 2020
USD ($)
Dec. 31, 2019
USD ($)
Organization and Basis of Presentation [Abstract]          
Number of branches | banking_offices 55        
Number of branches in grocery stores | banking_offices 13        
Segment Information [Abstract]          
Number of reportable segments | segment 1        
Cash and Cash Equivalents [Abstract]          
Cash on deposit with the Federal Reserve required to meet regulatory reserve and clearing requirements $ 0 $ 0      
Goodwill and Other Intangible Assets [Abstract]          
Goodwill impairment loss 0 0      
Amortization expense of intangible assets 2,273,000 2,849,000 $ 3,617,000    
Derivative Instruments and Hedges, Assets [Abstract]          
Debt Securities, Held-to-maturity, Allowance for Credit Loss $ 0        
Financing Receivable, Threshold Period Past Due 90 days        
Financing Receivable, Threshold Period Past Due, Writeoff 120 days        
Goodwill, Impaired, Accumulated Impairment Loss $ 0 0      
Equity balance 745,997,000 912,172,000 875,297,000   $ 804,580,000
Retained  Earnings          
Derivative Instruments and Hedges, Assets [Abstract]          
Equity balance 239,610,000 179,813,000 111,208,000   80,274,000
Cumulative effect of accounting change          
Derivative Instruments and Hedges, Assets [Abstract]          
Equity balance         (7,830,000)
Cumulative effect of accounting change | Retained  Earnings          
Derivative Instruments and Hedges, Assets [Abstract]          
Equity balance       $ 7,800,000 $ (7,830,000)
Core deposit intangible          
Goodwill and Other Intangible Assets [Abstract]          
Intangible assets, net 2,600,000        
Trust relationship intangible          
Goodwill and Other Intangible Assets [Abstract]          
Intangible assets, net 2,000,000        
Core Deposit Intangible and Trust Relationship Intangible [Member]          
Goodwill and Other Intangible Assets [Abstract]          
Amortization expense of intangible assets $ 2,300,000 $ 2,800,000 $ 3,500,000    
Premises | Minimum          
Premises and Equipment [Abstract]          
Estimated useful life 15 years        
Premises | Maximum          
Premises and Equipment [Abstract]          
Estimated useful life 40 years        
Equipment | Minimum          
Premises and Equipment [Abstract]          
Estimated useful life 3 years        
Equipment | Maximum          
Premises and Equipment [Abstract]          
Estimated useful life 10 years