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Accrued Expenses And Other Current Liabilities (Schedule Of Accrued Expenses And Other Current Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Accrued Expenses And Other Current Liabilities [Abstract]
Employee compensation and benefits	$ 16,613	$ 14,258	$ 16,180
Warranty	8,013	5,882	5,665
Sales rebates	4,866	3,337	3,369
Contingent consideration related to acquisitions	5,667	3,292	3,188
Other	11,915	9,400	11,011
Accrued expenses and other current liabilities	$ 47,074	$ 36,169	$ 39,413

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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