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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
CURRENT ASSETS:    
Accounts receivable, allowances for discounts and doubtful accounts $ 6,970 $ 6,709
Stockholders' equity:    
Common Stock - par value (in dollars per share) $ 2.00 $ 2.00
Common Stock, Authorized (in shares) 30,000,000 30,000,000
Common Stock, issued (in shares) 23,936,036 23,936,036
Treasury stock - at cost (in shares) 909,305 1,116,155