Annual report pursuant to Section 13 and 15(d)

Earnings Per Share (Basic And Diluted Earnings Per Share) (Details)

v2.4.0.6
Earnings Per Share (Basic And Diluted Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Mar. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Earnings Per Share [Abstract]                      
Net income $ 46,518 [1],[2] $ 24,304 $ 31,967 $ 20,281 $ 41,287 [1],[2] $ 14,878 $ 24,706 $ 17,653 $ 123,070 $ 98,523 $ 72,488
Weighted average number of shares outstanding:                      
Basic                 58,636 57,414 56,383
Dilutive effect of stock-based compensation awards                 2,053 2,132 947
Diluted                 60,689 59,546 57,330
Net income per share:                      
Basic $ 0.79 [1],[2] $ 0.41 $ 0.55 $ 0.35 $ 0.71 [1],[2] $ 0.26 $ 0.43 $ 0.31 $ 2.10 $ 1.72 $ 1.29
Diluted $ 0.76 [1],[2] $ 0.40 $ 0.53 $ 0.34 $ 0.69 [1],[2] $ 0.25 $ 0.42 $ 0.30 $ 2.03 $ 1.65 $ 1.26
Unexercised employee stock options and stock appreciation rights and unvested restricted stock units excluded from the diluted EPS calculation because their effect would have been antidilutive                 911 1,632 4,372
[1] 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 2011 and 2010.
[2] 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 one of the Cornerstone brands. These charges decreased diluted earnings per share by $0.03.