Balance Sheet Parentheticals (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts Receivable, Current	$ 15,925	$ 14,856
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	125,000,000	125,000,000
Common Stock, Shares, Issued	44,786,011	44,786,011
Common Stock, Shares, Outstanding	28,887,558	29,487,075
Treasury Stock, Shares	15,898,453	152,989,396