v2.4.0.6
EARNINGS PER SHARE (Details) (USD $)
3 Months Ended
Mar. 31, 2012
Apr. 02, 2011
Weighted-average number of common and common equivalent shares outstanding [Abstract]    
Basic number of common shares outstanding (in shares) 58,057,275 57,049,228
Dilutive effect of unvested restricted stock awards (in shares) 178,708 141,851
Dilutive effect of stock options (in shares) 604,735 694,932
Diluted number of common and common equivalent shares outstanding (in shares) 58,840,718 57,886,011
Basic net income per common share [Abstract]    
Net income $ 32,275,000 $ 32,123,000
Income allocated to participating securities (442,525) (364,477)
Net income available to common shareholders 31,832,475 31,758,523
Basic net income per common share (in dollars per share) $ 0.55 $ 0.56
Diluted net income per common share [Abstract]    
Net income 32,275,000 32,123,000
Income allocated to participating securities (438,025) (360,140)
Net income available to common shareholders $ 31,836,975 $ 31,762,860
Diluted net income per common share (in dollars per share) $ 0.54 $ 0.55
Anti-dilutive shares (in shares) 610,950 945,050