Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Details)

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Shareholders' Equity (Details) (USD $)
 3 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Sep. 27, 2011
Feb. 13, 2013
Subsequent Event [Member]
Stockholders' Equity Note [Abstract]                          
Number of rights per outstanding share declared 1               1        
Percentage of common stock to be acquired for exercise of the rights                 15.00%        
Discount on market price common stock for purchase of rights                 50.00%        
Shares authorized under share repurchase program                       10,000,000  
Stock Repurchased and Retired During Period, Shares                 5,500,000 800,000      
Stock Repurchased and Retired During Period, Value                 $ 220,600,000 $ 28,100,000      
Outstanding common stock acquired, average price                 $ 40.40 $ 35.46      
Payments of Dividends                 $ 31,049,000 $ 7,384,000 $ 0    
Subsequent Event [Line Items]                          
Cash dividend per common share $ 0.555               $ 0.555     $ 0.125  
Dividends declared per common share (usd per share) $ 0.18 [1],[2] $ 0.125 [3] $ 0.125 [4] $ 0.125 $ 0 [1],[2] $ 0.125 [3] $ 0 [4] $ 0 $ 0.555 $ 0.125 $ 0   $ 0.18
[1] The fourth quarter of 2011 includes $3.0 million of asset impairment charges, and a related $1.1 million tax benefit, related to indefinite-lived intangible assets and long-lived assets of The Territory Ahead, and is included in the line item "Loss from discontinued operations, net of tax." These charges decreased diluted earnings per share by $0.03.
[2] Cornerstone has a 4-4-5 week accounting cycle with the fiscal year ending on the Saturday on or immediately preceding December 31. The fourth quarter of 2011 included an extra week compared to the other quarters in 2012 and 2011.
[3] The third quarter of 2012 includes a sales tax settlement of $7.8 million, or $4.8 million net of taxes, and costs associated with the redemption of Senior Notes of $18.3 million, or $11.4 million net of taxes. These charges decreased diluted earnings per share by $0.28.
[4] The second quarter of 2012 includes a loss of $6.0 million, or $3.8 million net of taxes, related to the sales of Smith+Noble and The Territory Ahead, two brands formerly included in the Cornerstone portfolio, and is included in the line item "Loss from discontinued operations, net of tax." This loss decreased diluted earnings per share by $0.06.