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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	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Accrued Expenses And Other Current Liabilities [Abstract]
Employee compensation and benefits	$ 16,288	$ 18,555	$ 14,638
Warranty	9,802	9,125	6,780	5,882
Sales rebates	5,959	5,711	5,089
Contingent consideration related to acquisitions	5,412	5,429	4,823
Other	11,865	9,235	16,706
Accrued expenses and other current liabilities	$ 49,326	$ 48,055	$ 48,036

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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