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LEASES - Quantitative Information About Operating Leases (Details) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Operating lease expense summary:      
Operating lease expense $ 425,000 $ 425,000  
Short-term lease expense 3,000    
Variable lease expense 179,000 133,000  
Total 607,000 558,000  
Other information:      
Operating cash flows - operating leases $ 316,000 $ 238,000  
Weighted-average remaining lease term - operating leases 8 years 2 months 12 days   8 years 4 months 24 days
weighted-average discount rate used to determine the operating lease liability 5.70%   5.70%