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Earnings Per Share
 9 Months Ended
Sep. 30, 2020
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
The following table details the reconciliation of basic earnings per share to diluted earnings per share:
Three Months Ended September 30,Nine Months Ended September 30,
2020201920202019
Numerator for basic and diluted earnings per share:  
Net income$39,284 $40,390 $140,726 $99,737 
Denominator:  
Weighted-average basic common shares outstanding40,261 38,765 40,013 38,614 
Assumed conversion of dilutive securities:  
Stock awards1,345 1,515 1,480 1,401 
Denominator for diluted earnings per share
   - Adjusted weighted-average shares
41,606 40,280 41,493 40,015 
Earnings per common share:  
Basic$0.98 $1.04 $3.52 $2.58 
Diluted$0.94 $1.00 $3.39 $2.49 
For the three and nine months ended September 30, 2020, and 2019, stock awards representing the right to purchase common stock of approximately 215,000 and 140,000 shares and 443,000 and 815,000 shares, respectively, were not included in the computation of diluted earnings per share because their inclusion would have had an antidilutive effect.