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MORTGAGE SERVICING RIGHTS (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
OTHER INTANGIBLE ASSETS      
Income generated as a result of new mortgage servicing rights reported as gains on sale of loans $ 769 $ 2,439  
Mortgage Servicing Rights      
OTHER INTANGIBLE ASSETS      
Income generated as a result of new mortgage servicing rights reported as gains on sale of loans 300 500  
Changes in other intangible assets      
Balance, beginning of period 9,738 11,865  
Additions 276 461  
Amortization (534) (1,232)  
Balance, end of period 9,480 11,094  
Fair market value and key assumptions used in determining the fair market value      
Fair market value, beginning of period 10,504 12,003  
Fair market value, end of period 11,166 11,673  
Gross carrying value, accumulated amortization and net carrying value related to intangible assets      
Gross Carrying Value 72,526   $ 72,250
Accumulated Amortization (63,046)   (62,512)
Other intangible assets 9,480 11,094 9,738
Estimated Amortization Expense      
2022 (remainder) 1,671    
2021 1,837    
2022 1,506    
2023 1,231    
2024 1,026    
2025 852    
Thereafter 1,357    
Other intangible assets $ 9,480 $ 11,094 $ 9,738
Measurement Input, Discount Rate | Mortgage Servicing Rights      
Fair market value and key assumptions used in determining the fair market value      
Weighted average prepayment speed assumption 0.095 0.096  
Measurement Input, Constant Prepayment Rate | Mortgage Servicing Rights      
Fair market value and key assumptions used in determining the fair market value      
Weighted average prepayment speed assumption 0.183 0.175