Statements of Cash Flows Supplemental Disclosure	12 Months Ended
Statements of Cash Flows Supplemental Disclosure	Dec. 31, 2011
Supplemental Cash Flow Elements [Abstract]
Statements of Cash Flows Supplemental Disclosure	Statements of Cash Flows Supplemental Disclosure In 2010, the Company acquired $4.6 million of property, plant and equipment under capital lease arrangements. There were no such capital lease arrangements initiated in 2011 or 2009. In 2009, the Company began allowing participants the right to net share settle their stock options, where the Company issues a number of shares representing the value of the spread between the option exercise price and the then current market value of the shares subject to the option. In 2009, options for the purchase of 0.7 million shares, with an aggregate exercise price value of $12.9 million were exercised under this method. In 2011 and 2010, a minimal amount of shares under option were exercised under this method. Employees are also allowed to use shares to pay withholding taxes up to the statutory minimum. In 2011, 2010 and 2009, 45,072, 47,789 and 156,498 shares, respectively, were retained to fund withholding taxes, with values totaling $2.5 million, $2.2 million and $6.2 million, respectively, which were included as a component of stock repurchases in the Consolidated Statement of Cash Flows.

The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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