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Stock-based Payment Compensation (Tables)
9 Months Ended
Apr. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of option activity for stock options The following is a summary of activity for the Company’s stock options for the nine months ended April 30, 2021:
(In thousands, except per share and term data)SharesWeighted Average Exercise PriceWeighted Average Remaining Contractual Term (In years)Aggregate Intrinsic Value
Outstanding as of July 31, 20208,059 $41.44 6.72$417,529 
Grants of options1,280 107.45 
Exercises(1,148)25.12 
Forfeitures or expirations(212)47.14 
Outstanding as of April 30, 20217,979 $54.23 6.68$560,800 
Exercisable as of April 30, 20214,295 $33.26 5.11$391,925 
Recognized stock-based compensation expense
The table below sets forth the stock-based compensation recognized by the Company for stock options, restricted stock, and restricted unit awards:
Three Months Ended April 30,Nine Months Ended April 30,
(In thousands)2021202020212020
General and administrative$7,966 $4,113 $22,399 $13,258 
Yard operations1,401 1,442 4,746 3,971 
Total stock-based compensation$9,367 $5,555 $27,145 $17,229 
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] The following is a summary of activity for the Company’s RSA’s and RSU’s for the nine months ended April 30, 2021:
(In thousands, except per share data)Restricted SharesWeighted Average Grant Date Fair Value
Outstanding as of July 31, 2020105 $69.86 
Grants 47 111.52 
Vested(26)70.43 
Forfeitures or expirations(6)65.17 
Outstanding as of April 30, 2021120 $86.18