STOCKHOLDERS' EQUITY: - Directors' Stock Award Plan (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Share based compensation
Stock based compensation expense		$ 0.2
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
Period of extension of plan	5 years
Increased share awards issued to directors	1,600