Common stock repurchase	3 Months Ended
Oct. 31, 2011
Common stock repurchase	16. Common stock repurchase: On December 9, 2010, the Company announced that its Board of Directors authorized the repurchase of up to $30,000 of the Company’s common stock. The repurchase program will be funded using the Company’s available cash. During the three months ended October 31, 2011, the Company repurchased and retired 231,700 shares of Common Stock under this repurchase program for $11,808 at an average purchase price of $50.96 per share. As of October 31, 2011, the Company repurchased and retired 531,989 shares of Common Stock under this repurchase program for $26,995 at an average purchase price of $50.74 per share. On December 5, 2011, the Company announced that its Board of Directors authorized the repurchase of up to $30,000 of the Company’s common stock. The repurchase program will be funded using the Company’s available cash.

16. Common stock repurchase:

On December 9, 2010, the Company announced that its Board of Directors authorized the repurchase of up to $30,000 of the Company’s common stock. The repurchase program will be funded using the Company’s available cash. During the three months ended October 31, 2011, the Company repurchased and retired 231,700 shares of Common Stock under this repurchase program for $11,808 at an average purchase price of $50.96 per share. As of October 31, 2011, the Company repurchased and retired 531,989 shares of Common Stock under this repurchase program for $26,995 at an average purchase price of $50.74 per share.

On December 5, 2011, the Company announced that its Board of Directors authorized the repurchase of up to $30,000 of the Company’s common stock. The repurchase program will be funded using the Company’s available cash.