Product Warranty Obligations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Changes in product warranty obligations [Roll Forward]
Balance at beginning of period	$ 55,249	$ 39,079	$ 49,585	$ 34,380
Payments, net of extended warranty receipts	(1,635)	(2,866)	(5,191)	(7,318)
Charged to operations	3,271	5,175	12,491	14,326
Balance at end of period	56,885	41,388	56,885	41,388
Product warranty obligations included in consolidated balance sheets [Abstract]
Other accrued liabilities	34,931		34,931		28,752
Other long-term liabilities	21,954		21,954		20,833
Balance at end of period	$ 56,885	$ 41,388	$ 56,885	$ 41,388

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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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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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

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