Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Other Liabilities [Line Items]
Payroll, commissions, bonuses, other cash compensation and employee benefits	$ 85,855	$ 61,334
General insurance	12,164	12,118
Sales and marketing programs	34,528	31,070
Professional and legal costs	10,269	10,844
Restructuring costs	4,787	9,191
Warranty liabilities	3,765	4,253	4,141	4,260
Deferred income	6,304	5,656
Accrued vacation and holidays	28,169	12,528
Third party royalties	10,174	9,184
Current portion of derivatives	18,143	27,668
Other	75,043	40,899
Accrued Liabilities, Current, Total	$ 289,201	$ 224,745