Common Stock Repurchases	12 Months Ended
Jul. 31, 2013
Common Stock Repurchases	19. Common stock repurchases: On December 9, 2010, we announced that our board of directors had authorized the repurchase of up to $30,000 of our common stock. During fiscal year 2012, we repurchased 286,390 shares of common stock under this repurchase program for $14,813 at an average purchase price of $51.73 per share. The 2010 repurchase program was completed in the second quarter of fiscal year 2012. The cumulative shares that were repurchased and retired under the program were 586,679 shares of common stock for $30,000 at an average price of $51.14 per share. On December 8, 2011, we announced that our Board of Directors had authorized the repurchase of up to an additional $30,000 of our common stock. The repurchase program will be funded using our available cash. During the fiscal year 2013, we repurchased and retired 111,816 shares of common stock under this repurchase program for $7,945 at an average purchase price of $71.06 per share. During fiscal year 2012, we repurchased and retired 137,591 shares of common stock under this repurchase program for $8,447 at an average purchase price of $61.39 per share. As of July 31, 2013, we had repurchased and retired a total of 249,407 shares of common stock under this repurchase program for $16,393 at an average purchase price of $65.73 per share.

19. Common stock repurchases:

On December 9, 2010, we announced that our board of directors had authorized the repurchase of up to $30,000 of our common stock. During fiscal year 2012, we repurchased 286,390 shares of common stock under this repurchase program for $14,813 at an average purchase price of $51.73 per share. The 2010 repurchase program was completed in the second quarter of fiscal year 2012. The cumulative shares that were repurchased and retired under the program were 586,679 shares of common stock for $30,000 at an average price of $51.14 per share.

On December 8, 2011, we announced that our Board of Directors had authorized the repurchase of up to an additional $30,000 of our common stock. The repurchase program will be funded using our available cash. During the fiscal year 2013, we repurchased and retired 111,816 shares of common stock under this repurchase program for $7,945 at an average purchase price of $71.06 per share. During fiscal year 2012, we repurchased and retired 137,591 shares of common stock under this repurchase program for $8,447 at an average purchase price of $61.39 per share. As of July 31, 2013, we had repurchased and retired a total of 249,407 shares of common stock under this repurchase program for $16,393 at an average purchase price of $65.73 per share.