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Stock-based Compensation (Tables)
 6 Months Ended
Jan. 31, 2022
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 six months ended January 31, 2022:
(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, 20217,557 $56.19 6.53$686,269 
Grants of options145 145.21 
Exercises(392)30.87 
Forfeitures or expirations(107)55.14 
Outstanding as of January 31, 20227,203 $59.38 6.08$505,604 
Exercisable as of January 31, 20224,545 $43.84 4.97$388,501 
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 January 31,Six Months Ended January 31,
(In thousands)2022202120222021
General and administrative$8,247 $7,051 $16,718 $14,433 
Yard operations1,415 1,814 2,396 3,345 
Total stock-based compensation$9,662 $8,865 $19,114 $17,778 
Share based payment arrangement restricted stock and restricted stock unit activity The following is a summary of activity for the Company’s RSA’s and RSU’s for the six months ended January 31, 2022:
(In thousands, except per share data)Restricted SharesWeighted Average Grant Date Fair Value
Outstanding as of July 31, 2021102 $90.46 
Grants 66 143.24 
Vested(13)66.16 
Forfeitures or expirations(7)115.40 
Outstanding as of January 31, 2022148 $115.24