STOCKHOLDERS' EQUITY: - Directors Stock Award Plan (Details) - shares	9 Months Ended
	Sep. 30, 2022	Sep. 30, 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)	8,800	8,000
Total shares granted at the end of the period (in shares)	(414,000)	(399,600)
Remaining shares reserved	186,000	200,400
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