Earnings Per Share	6 Months Ended
Jan. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	4. Earnings Per Share Basic earnings per share have been computed by dividing net income by the weighted average shares outstanding. Diluted earnings per share have been computed by dividing net income by the weighted average shares outstanding plus potentially dilutive common shares. There were approximately 408,000 and 362,000 dilutive shares related to stock-based awards for the three and six months ended January 31, 2018, respectively. There were approximately 412,000 and 321,000 dilutive shares related to stock-based awards for the three and six months ended January 31, 2017, respectively. Outstanding stock-based awards are not included in the computation of diluted earnings per share under the treasury stock method if the effect of including them would be anti-dilutive. There were no potentially dilutive securities that were not included in the computation of diluted earnings per share for the three and six months ended January 31, 2018, respectively. All outstanding stock awards were dilutive for the three months ended January 31, 2017. There were 97,000 performance-based stock awards that were not included in the computation of diluted earnings per share because the performance metrics had not been met as of January 31, 2017. There were 5,580 potentially dilutive securities that were not included for the six months ended January 31, 2017. On October 23, 2017, the Company completed an underwritten public offering of 3,450,000 shares of its common stock, including 450,000 shares issued pursuant to the underwriters’ exercise of their option to purchase additional shares, at a public offering price of $54 per share, resulting in estimated net proceeds of approximately $175.7 million after deducting underwriting commissions and estimated offering expenses.

4. Earnings Per Share

Basic earnings per share have been computed by dividing net income by the weighted average shares outstanding. Diluted earnings per share have been computed by dividing net income by the weighted average shares outstanding plus potentially dilutive common shares. There were approximately 408,000 and 362,000 dilutive shares related to stock-based awards for the three and six months ended January 31, 2018, respectively. There were approximately 412,000 and 321,000 dilutive shares related to stock-based awards for the three and six months ended January 31, 2017, respectively.

Outstanding stock-based awards are not included in the computation of diluted earnings per share under the treasury stock method if the effect of including them would be anti-dilutive. There were no potentially dilutive securities that were not included in the computation of diluted earnings per share for the three and six months ended January 31, 2018, respectively. All outstanding stock awards were dilutive for the three months ended January 31, 2017. There were 97,000 performance-based stock awards that were not included in the computation of diluted earnings per share because the performance metrics had not been met as of January 31, 2017. There were 5,580 potentially dilutive securities that were not included for the six months ended January 31, 2017.

On October 23, 2017, the Company completed an underwritten public offering of 3,450,000 shares of its common stock, including 450,000 shares issued pursuant to the underwriters’ exercise of their option to purchase additional shares, at a public offering price of $54 per share, resulting in estimated net proceeds of approximately $175.7 million after deducting underwriting commissions and estimated offering expenses.