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STOCK-BASED COMPENSATION PLANS - Summary of stock option activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Summary of stock option activity under the option Plan          
Number of Shares, Granted 200,000 0 200,000 0  
Outstanding at ending balance 816,000   816,000    
Exercisable Number of Options 557,000   557,000    
Employee Stock Option          
Summary of stock option activity under the option Plan          
Outstanding at beginning balance     765,000    
Number of Shares, Exercised     (147,000)    
Number of Shares, Granted     200,000    
Number of Shares, Forfeited     (2,000)    
Outstanding at ending balance 816,000   816,000   765,000
Exercisable Number of Options 557,000   557,000    
Weighted Average Exercise Price, Outstanding at beginning balance     $ 1.36    
Weighted Average Exercise Price, Granted     6.23    
Weighted Average Exercise Price, Forfeited     3.21    
Weighted Average Exercise Price, Exercised     0.50    
Weighted Average Exercise Price, Outstanding at ending balance $ 2.70   2.70   $ 1.36
Weighted Average Exercise Price, Exercisable at ending balance $ 1.27   $ 1.27    
Weighted Average Remaining Contractual Life, Outstanding     5 years 7 months 2 days   4 years 8 months 4 days
Weighted Average Remaining Contractual Life, Exercisable (Years)     3 years 11 months 12 days    
Aggregate Intrinsic Value, Outstanding $ 4,318   $ 4,318   $ 5,896
Aggregate Intrinsic Value, Exercisable $ 3,743   $ 3,743