Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2012
Subsequent Events [Abstract]
Subsequent Events [Text Block]	(10) Subsequent Events On October 25, 2012, the Company amended and restated its revolving credit agreement, which provides the Company with an unsecured committed line of credit (the “Amended Agreement”). The Amended Agreement provides the Company with an additional $200,000 to the previous committed borrowing facility, for a total committed borrowing facility of $700,000 under the Amended Agreement. In addition, the Amended Agreement extends the committed borrowing facility through October 2017 and reduces certain fees. The commitment fee to be paid by the Company based on the unused portion of the facility is reduced to 0.15% from 0.225% and the interest rate was amended to a Base Rate or Eurocurrency Rate plus 1.25% from Eurocurrency Rate plus 1.50% on borrowings under the facility. Under the Amended Agreement, the commitment fee and the amount of the spread to the Base Rate or Eurocurrency Rate will continue to vary based on the Company’s long-term debt ratings and the Company’s leverage. There were no changes to existing financial covenants.

Tabular disclosure of significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, losses resulting from fire or flood, losses on receivables, significant realized and unrealized gains and losses that result from changes in quoted market prices of securities, declines in market prices of inventory, changes in authorized or issued debt (SEC), significant foreign exchange rate changes, substantial loans to insiders or affiliates, significant long-term investments, and substantial dividends not in the ordinary course of business.

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