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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Statement Of Financial Position [Abstract]    
Receivables, allowances $ 4,459 $ 8,117
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares issued      
Preferred stock, shares outstanding      
Common stock, par value $ 0.005 $ 0.005
Common stock, shares authorized 70,000,000 70,000,000
Common stock, shares issued 46,606,796 46,606,796
Treasury stock, shares 7,751,807 7,159,023