Components of Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Accrued Liabilities [Line Items]
Payroll and related items	$ 48,900	$ 51,728
Management incentive compensation	8,306	17,402
Income taxes payable	19,659	8,456
Deferred income taxes	169	167
Insurance	5,393	6,495
Warranty	4,361	4,417
Deferred revenue	4,914	7,954
Restructuring	2,754	5,875
Liability for uncertain tax positions	1,792	1,061
Accrued interest	1,328	1,424
Contingent consideration for acquisition	1,500	1,500
Other	25,091	24,217
Total accrued expenses	$ 124,167	$ 130,696