Common stock repurchases	12 Months Ended
Jul. 31, 2017
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Common stock repurchases	17. Common stock repurchases On June 2, 2014, our board of directors authorized the repurchase of up to $30.0 million of our common stock. The repurchase program will be funded by our available cash. During fiscal year 2017, we repurchased and retired 13,578 shares of common stock under this repurchase program for $1.0 million at an average purchase price of $74.08 per share. During fiscal year 2016, we repurchased and retired 171,899 shares of common stock under this repurchase program for $13.7 million at an average purchase price of $79.66 per share. During fiscal year 2015, we repurchased and retired 176,611 shares of common stock under this repurchase program for $13.9 million at an average purchase price of $78.51 per share. The cumulative shares that were repurchased and retired under the program were 380,771 shares of common stock for $30 million at an average price of $78.76 per share. The June 2, 2014 repurchase program is now complete. On May 26, 2016, our board of directors authorized the repurchase of up to $15.0 million of our common stock. Purchases under this repurchase program will be made from time to time depending on market conditions and other factors. The repurchase program has no expiration date. The Board's authorization does not obligate the Company to acquire any particular amount of common stock, and the programs may be suspended or discontinued at any time at the Company's discretion. During fiscal year 2017, we repurchased and retired 47,708 shares of common stock under this repurchase program for $3.4 million at an average purchase price of $71.23 per share. The cumulative shares that were repurchased and retired under the program were 47,708 shares of common stock for $3.4 million at an average price of $71.23 per share.

17. Common stock repurchases

On June 2, 2014, our board of directors authorized the repurchase of up to $30.0 million of our common stock. The repurchase program will be funded by our available cash. During fiscal year 2017, we repurchased and retired 13,578 shares of common stock under this repurchase program for $1.0 million at an average purchase price of $74.08 per share. During fiscal year 2016, we repurchased and retired 171,899 shares of common stock under this repurchase program for $13.7 million at an average purchase price of $79.66 per share. During fiscal year 2015, we repurchased and retired 176,611 shares of common stock under this repurchase program for $13.9 million at an average purchase price of $78.51 per share. The cumulative shares that were repurchased and retired under the program were 380,771 shares of common stock for $30 million at an average price of $78.76 per share. The June 2, 2014 repurchase program is now complete.

On May 26, 2016, our board of directors authorized the repurchase of up to $15.0 million of our common stock. Purchases under this repurchase program will be made from time to time depending on market conditions and other factors. The repurchase program has no expiration date. The Board's authorization does not obligate the Company to acquire any particular amount of common stock, and the programs may be suspended or discontinued at any time at the Company's discretion. During fiscal year 2017, we repurchased and retired 47,708 shares of common stock under this repurchase program for $3.4 million at an average purchase price of $71.23 per share. The cumulative shares that were repurchased and retired under the program were 47,708 shares of common stock for $3.4 million at an average price of $71.23 per share.