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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Product Warranty (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Accrual at beginning of the year	$ 5,322	$ 2,738
Provision	901	3,908
Settlement and Other	(1,866)	(1,324)
Accrual at end of year	$ 4,357	$ 5,322

- 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.

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