Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts Receivable, Current	$ 27,854	$ 22,128
Preferred Stock, No Par Value	$ 0	$ 0
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred Stock, Shares Issued	0	0
Common Stock, Par or Stated Value Per Share	$ 1.25	$ 1.25
Common Stock, Shares Authorized	125,000,000	125,000,000
Common Stock, Shares, Issued	77,661,118	76,840,956
Common Stock, Shares, Outstanding	63,240,667	62,513,615
Treasury Stock, Shares	14,420,451	14,327,341