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STOCKHOLDERS EQUITY - Directors Stock Award Plan (Details) - shares
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Directors' Stock Award Plan    
Share based Compensation Plan    
Common shares received on election as director 1,200  
Additional shares issued at each annual general meeting 1,200  
Total SCC shares reserved for the plan 600,000 600,000
Period of extension of plan 5 years  
Increased share awards issued to directors 1,600  
Activity in directors' stock award plan    
Total shares granted at the beginning of the period (in shares) (405,200) (391,600)
Granted (in shares) 3,200  
Total shares granted at the end of the period (in shares) (408,400) (391,600)
Remaining shares reserved 191,600 208,400
New 2021 grant [Member]    
Share based Compensation Plan    
Numbers of shares shall be granted quarterly and conditioned upon the attendance of each director to each Board meeting 1,600