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STOCKHOLDERS' EQUITY - Warrants (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
Number of Shares, Granted 200,000 0 200,000 0  
Outstanding at ending balance 816,000   816,000    
Warrant          
Outstanding at beginning balance     99,000    
Number of Shares, Granted     0    
Number of Shares, Exercised     0    
Number of Shares, Forfeited     0    
Outstanding at ending balance 99,000   99,000   99,000
Weighted Average Exercise Price, Outstanding at beginning balance     $ 2.40    
Weighted Average Exercise Price, Granted     0    
Weighted Average Exercise Price, Exercised     0    
Weighted Average Exercise Price, Forfeited     0    
Weighted Average Exercise Price, Outstanding at ending balance $ 2.40   $ 2.40   $ 2.40
Weighted Average Remaining Contractual Life (Years)     2 years 3 months 7 days   2 years 9 months 3 days
Weighted Average Remaining Contractual Life, Granted (Years)     0 years    
Weighted Average Remaining Contractual Life, Exercisable (Years)     0 years    
Weighted Average Remaining Contractual Life, Forfeited (Years)     0 years    
Aggregate Intrinsic Value, Outstanding $ 451   $ 451   $ 660
Aggregate Intrinsic Value, Outstanding $ 451   $ 451   $ 660