Common stock repurchases	12 Months Ended
Jul. 31, 2012
Common stock repurchases	20. Common stock repurchases: On December 9, 2010, the Company announced that its Board of Directors had authorized the repurchase of up to $30,000 of the Company’s common stock. During fiscal year 2012, the Company 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, the Company announced that its Board of Directors had authorized the repurchase of up to an additional $30,000 of the Company’s common stock. The repurchase program will be funded using the Company’s available cash. During the fiscal year 2012, the Company repurchased and retired 137,591shares of common stock under this repurchase program for $8,447 at an average purchase price of $61.39 per share.

20. Common stock repurchases:

On December 9, 2010, the Company announced that its Board of Directors had authorized the repurchase of up to $30,000 of the Company’s common stock. During fiscal year 2012, the Company 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, the Company announced that its Board of Directors had authorized the repurchase of up to an additional $30,000 of the Company’s common stock. The repurchase program will be funded using the Company’s available cash. During the fiscal year 2012, the Company repurchased and retired 137,591shares of common stock under this repurchase program for $8,447 at an average purchase price of $61.39 per share.