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Per Share Information
 3 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
5. PER SHARE INFORMATION

The following tables reconcile the components of basic and diluted earnings per share for the three months ended December 31, 2020 and 2019:
Three Months Ended December 31,
20202019
Numerator:
Net income attributable to common stockholders of IES Holdings, Inc.$12,204 $8,337 
Increase (decrease) in noncontrolling interest(118)45 
Net income attributable to restricted stockholders of IES Holdings, Inc.12 120 
Net income attributable to IES Holdings, Inc.$12,098 $8,502 
Denominator:
Weighted average common shares outstanding — basic20,734,516 20,883,477 
Effect of dilutive stock options and non-vested securities326,839 264,835 
Weighted average common and common equivalent shares outstanding — diluted
21,061,355 21,148,312 
Earnings per share attributable to common shareholders of IES Holdings, Inc.:
Basic$0.58$0.40
Diluted$0.58$0.39

For the three months ended December 31, 2020 and 2019, the average price of our common shares exceeded the exercise price of all of our outstanding options; therefore, all of our outstanding stock options were included in the computation of fully diluted earnings per share.