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Consolidated Statements Of Cash Flows (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Supplemental schedule on non-cash investing activities:
Product line acquisitions	$ 316		$ 32,677
Payments for product line acquisitions in current year			20,655
Payments for product line acquisitions in prior years				2,400
Additions to intangible assets and related liability		$ 6,802

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Payments for product line acquisitions in current year.

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Payments for product line acquisitions in prior years.

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.

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The value of an asset or business acquired in a noncash (or part noncash) acquisition. 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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