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Supplemental Cash Flow and Other Information	12 Months Ended
Dec. 31, 2011
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow and Other Information	13. Supplemental Cash Flow and Other Information Included in accounts payable and accrued liabilities at December 31, 2011, 2010, and 2009, were capital expenditures of $3.7 million, $2.3 million, and $1.4 million, respectively. Accrued liabilities at December 31, 2011 and 2010 were $47.4 million and $43.2 million respectively. The balance in 2011 included $19.7 million for employee incentives and other compensation related expenses, and $8.2 million in estimated obligations under the one-year earn-out provision relating to our April 2011 acquisition. The balance in 2010 included $15.4 million for employee incentives and other compensation related expenses. During the years ended December 31, 2011, 2010 and 2009, we did not finance the acquisition of property, plant and equipment with capital leases.

Supplemental Cash Flow and Other Information

12 Months Ended

Dec. 31, 2011

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow and Other Information

13. Supplemental Cash Flow and Other Information

Included in accounts payable and accrued liabilities at December 31, 2011, 2010, and 2009, were capital expenditures of $3.7 million, $2.3 million, and $1.4 million, respectively.

Accrued liabilities at December 31, 2011 and 2010 were $47.4 million and $43.2 million respectively. The balance in 2011 included $19.7 million for employee incentives and other compensation related expenses, and $8.2 million in estimated obligations under the one-year earn-out provision relating to our April 2011 acquisition. The balance in 2010 included $15.4 million for employee incentives and other compensation related expenses.

During the years ended December 31, 2011, 2010 and 2009, we did not finance the acquisition of property, plant and equipment with capital leases.

- Definition

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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