Shareholders' Equity	12 Months Ended
Nov. 30, 2015
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Preferred Stock Our Board of Directors is authorized to establish one or more series of preferred stock and to fix and determine the number and conditions of preferred shares, including dividend rates, redemption and/or conversion provisions, if any, preferences and voting rights. As of November 30, 2015, there was no preferred stock issued or outstanding. Common Stock We have 200,000,000 shares of authorized common stock, $0.01 par value per share, of which 50,579,539 were issued and outstanding at November 30, 2015. There were 74,900 deferred stock units (DSUs) outstanding at November 30, 2015. Each DSU represents one share of our common stock and all DSU grants have been made to non-employee members of our Board of Directors. The DSUs granted prior to fiscal year 2011 were fully vested on the date of grant and do not have voting rights and can only be converted into common stock when the recipient ceases being a member of the Board of Directors. There were 21,700 DSUs granted in fiscal year 2011, all of which were vested as of November 30, 2015. Common Stock Repurchases During fiscal year 2012, our Board of Directors authorized a $350.0 million return of capital to shareholders in the form of a share repurchase through fiscal year 2013. In July 2013, the Board increased the authorization by $10.0 million to $360.0 million. In fiscal year 2013, we repurchased and retired 11,579,000 shares of our common stock for $269.5 million. In January 2014, our Board of Directors authorized a $100.0 million share repurchase program. In fiscal year 2014, we repurchased and retired 2.3 million shares of our common stock for $52.6 million. In fiscal year 2015, under the same authorization, we repurchased and retired 1.3 million shares for $32.9 million, leaving $14.5 million remaining under the authorization. In September 2015, our Board of Directors authorized a new $100.0 million share repurchase program, which increased the total authorization to $114.5 million. The timing and amount of any shares repurchased will be determined by management based on its evaluation of market conditions and other factors, and the Board of Directors may choose to suspend, expand or discontinue the repurchase program at any time.

Shareholders’ Equity

Preferred Stock

Our Board of Directors is authorized to establish one or more series of preferred stock and to fix and determine the number and conditions of preferred shares, including dividend rates, redemption and/or conversion provisions, if any, preferences and voting rights. As of November 30, 2015, there was no preferred stock issued or outstanding.

Common Stock

We have 200,000,000 shares of authorized common stock, $0.01 par value per share, of which 50,579,539 were issued and outstanding at November 30, 2015.

There were 74,900 deferred stock units (DSUs) outstanding at November 30, 2015. Each DSU represents one share of our common stock and all DSU grants have been made to non-employee members of our Board of Directors. The DSUs granted prior to fiscal year 2011 were fully vested on the date of grant and do not have voting rights and can only be converted into common stock when the recipient ceases being a member of the Board of Directors. There were 21,700 DSUs granted in fiscal year 2011, all of which were vested as of November 30, 2015.

Common Stock Repurchases

During fiscal year 2012, our Board of Directors authorized a $350.0 million return of capital to shareholders in the form of a share repurchase through fiscal year 2013. In July 2013, the Board increased the authorization by $10.0 million to $360.0 million. In fiscal year 2013, we repurchased and retired 11,579,000 shares of our common stock for $269.5 million.

In January 2014, our Board of Directors authorized a $100.0 million share repurchase program. In fiscal year 2014, we repurchased and retired 2.3 million shares of our common stock for $52.6 million. In fiscal year 2015, under the same authorization, we repurchased and retired 1.3 million shares for $32.9 million, leaving $14.5 million remaining under the authorization.

In September 2015, our Board of Directors authorized a new $100.0 million share repurchase program, which increased the total authorization to $114.5 million. The timing and amount of any shares repurchased will be determined by management based on its evaluation of market conditions and other factors, and the Board of Directors may choose to suspend, expand or discontinue the repurchase program at any time.