Quarterly report pursuant to Section 13 or 15(d)

Revisions (Consolidated Statements Of Stockholders' Equity) (Details)

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Revisions (Consolidated Statements Of Stockholders' Equity) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Dec. 31, 2011
Jan. 01, 2011
Other comprehensive income, net of tax $ (488) $ 1,365 $ (88) $ 2,021    
Accumulated Other Comprehensive Income (Loss), Balance at July 2, 2011 5,751   5,751   5,839  
Total Stockholders' Equity, Balance at July 2, 2011 183,627 153,071 183,627 153,071 173,910 146,802
As Previously Reported [Member]
            
Other comprehensive income, net of tax       1,005    
Accumulated Other Comprehensive Income (Loss), Balance at July 2, 2011   4,726   4,726    
Total Stockholders' Equity, Balance at July 2, 2011   150,419   150,419    
Adjustment [Member]
            
Other comprehensive income, net of tax       1,016    
Accumulated Other Comprehensive Income (Loss), Balance at July 2, 2011   2,652   2,652    
Total Stockholders' Equity, Balance at July 2, 2011   2,652   2,652    
As Revised [Member]
            
Other comprehensive income, net of tax       2,021    
Accumulated Other Comprehensive Income (Loss), Balance at July 2, 2011   7,378   7,378    
Total Stockholders' Equity, Balance at July 2, 2011   $ 153,071   $ 153,071