Supplemental Cash Flow Disclosures	3 Months Ended
Supplemental Cash Flow Disclosures	Mar. 31, 2012
Supplemental Cash Flow Disclosures [Abstract]
Supplemental Cash Flow Disclosures	14. Supplemental Cash Flow Disclosures Purchases of property, plant and equipment included in accounts payable was $3.4 million and $2.4 million at March 31, 2012 and 2011, respectively. Property, plant and equipment purchased under capital lease obligations was $1.1 million for the three months ended March 31, 2012.

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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