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Earnings (Loss) Per Share of Common Stock
6 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]  
Earnings (Loss) Per Share of Common Stock Earnings (Loss) Per Share of Common Stock
The computations of basic and diluted earnings (loss) per share of common stock are noted in the tables below. Basic earnings (loss) per share of common stock is computed by dividing the net income (loss) attributable to California Water Service Group by the weighted average number of common shares outstanding during the period. RSAs are included in the weighted average common shares outstanding because the shares have all the same voting and dividend rights as issued and unrestricted common stock. Certain outstanding equity instruments are not included in the diluted earnings (loss) per share calculation because their inclusion would have been anti-dilutive.
 Three Months Ended June 30
 20232022
(In thousands, except per share data)
Net income$9,447 $19,215 
Net loss attributable to noncontrolling interests$(109)$(269)
Net income attributable to California Water Service Group$9,556 $19,484 
Weighted average common shares outstanding, basic56,692 54,007 
Weighted average common shares outstanding, dilutive56,730 54,042 
Earnings per share of common stock - basic$0.17 $0.36 
Earnings per share of common stock - diluted $0.17 $0.36 
 Six Months Ended June 30
 20232022
(In thousands, except per share data)
Net (loss) income$(12,887)$20,109 
Net loss attributable to noncontrolling interests$(232)$(461)
Net (loss) income attributable to California Water Service Group$(12,655)$20,570 
Weighted average common shares outstanding, basic56,182 53,870 
Weighted average common shares outstanding, dilutive56,182 53,918 
(Loss) earnings per share of common stock - basic$(0.23)$0.38 
(Loss) earnings per share of common stock - diluted$(0.23)$0.38