Components of Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Schedule of Accrued Liabilities [Line Items]
Payroll and related items	$ 52,954	$ 55,618
Management incentive compensation	10,985	15,974
Income taxes payable	16,828	10,284
Insurance	9,206	8,974
Warranty	4,812	4,875
Deferred revenue	12,576	9,682
Restructuring	1,332	10,887
Liability for uncertain tax positions	2,368	2,679
Accrued interest	1,721	1,713
Contingent consideration for acquisition	4,890	3,528
Other	26,323	25,962
Total accrued expenses	$ 143,994	$ 150,176