Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.20.2
Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of stock-based compensation expense
Stock-based compensation expense under the Company’s plans was as follows:
  Three Months Ended Six Months Ended
  June 30, June 30,
  2020 2019 2020 2019
Stock-based compensation expense $ 13,006    $ 13,434    $ 26,771    $ 26,298   
Tax effect on stock-based compensation expense (3,317)   (3,504)   (6,826)   (6,859)  
Net effect on income $ 9,689    $ 9,930    $ 19,945    $ 19,439   
Schedule of weighted average assumptions used to value options granted
The following weighted average assumptions were used to value options granted during the periods indicated:
  Three Months Ended Six Months Ended
  June 30, June 30,
  2020 2019 2020 2019
Grant date fair value of options $ —    $ —    $ —    $ 21.55   
Volatility —  % —  % —  % 40.0  %
Risk-free interest rate —  % —  % —  % 2.5  %
Dividend yield —  % —  % —  % —  %
Expected term (in years) 0.0 0.0 0.0 6.5
Summary of option activity under the company's plans
The following table summarizes option activity under the Company’s plans:
      Weighted-Average  
    Weighted- Remaining  
    Average Contractual Life Aggregate
  Options Exercise Price (Years) Intrinsic Value
Outstanding as of December 31, 2019 1,150,586    $ 25.66    3.4 $ 50,590   
Granted —    —   
Exercised (542,449)   16.97     
Forfeited (7,213)   48.70     
Outstanding as of June 30, 2020 600,924    33.23    4.0 24,225   
Options exercisable 560,745    $ 32.10    3.7 $ 23,238   
Summary of the activity for unvested restricted stock units and awards granted under the Company's plans
The following is a summary of the activity for unvested restricted stock units and performance stock units granted under the Company’s plans:
RSUs PSUs
  Number of
Shares
Weighted-
Average Grant
Date Fair Value
per Share
Number of
Shares
Weighted-
Average Grant
Date Fair Value
per Share
Outstanding as of December 31, 2019 1,318,870    $ 58.88    254,118    $ 67.96   
Granted 951,428    74.52    67,793    81.42   
Vested (533,088)   56.77    —    —   
Forfeited (103,133)   59.89    (33,010)   64.70   
Outstanding as of June 30, 2020 1,634,077    68.61    288,901    71.49