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Subsequent Events (Details) (USD $)
 0 Months Ended 1 Months Ended
May 01, 2012
Apr. 02, 2012
Apr. 30, 2012
Mar. 31, 2012
Subsequent Event [Line Items]        
Business acquisition, cash payment   $ 231,700,000    
Shares of common stock issued in business acquisition   150,000    
Value of common stock issued in business acquisition   19,900,000    
Common stock to be received if the net sales exceed certain thresholds   100,000    
Approximate amount of acquisition-related expenses for legal, accounting and valuation services       600,000
Revolving credit loans, maximum borrowing capacity   350,000,000    
Revolving credit loans, maximum current borrowing capacity       300,000,000
Uncommitted incremental revolving credit commitment   50,000,000    
Borrowings under Revolver     214,000,000  
Credit Facility, interest rate 1.50%   1.50%  
Credit Facility, outstanding amount 38,000,000      
Credit Facility, amount renewed 176,000,000      
Swingline [Member]
        
Subsequent Event [Line Items]        
Revolving credit loans, maximum borrowing capacity   $ 20,000,000