Accrued Expenses (Components of Accrued Expenses) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Payroll and related items	$ 61,224	$ 63,297
Management incentive compensation	20,302	20,949
Income taxes payable	11,967	11,746
Insurance	9,875	7,741
Warranty	5,400	4,888
Deferred revenue	12,724	9,455
Liability for uncertain tax positions	950	1,201
Accrued interest	9,430	1,354
Other	29,023	30,120
Total accrued expenses	$ 160,895	$ 150,751