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Per share amounts (Tables)
12 Months Ended
Dec. 31, 2020
Per Share Amounts [Abstract]  
Schedule of Earnings Per Share computation per common share
20202019
Basic earnings (loss) per share computation
Net earnings (loss) attributable to equity holders$(53,169)$74,000
Weighted average common shares outstanding395,829395,797
Basic earnings (loss) per common share$(0.13)$0.19
Diluted earnings (loss) per share computation
Net earnings (loss) attributable to equity holders$(53,169)$74,000
Weighted average common shares outstanding395,829395,797
Dilutive effect of stock options214258
Weighted average common shares outstanding, assuming dilution396,043396,055
Diluted earnings (loss) per common share$(0.13)$0.19