Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accounts Receivable, allowances	$ 6,001	$ 4,768
Common Stock, Par Value	$ 0.50	$ 0.50
Common Stock, Shares Authorized	225,000,000	225,000,000
Common Stock, Shares Issued	90,752,123	90,752,123
Treasury Shares	15,031,741	15,111,635