Accrued Expenses (Components of Accrued Expenses) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Payroll and related items	$ 58,543	$ 63,297
Management incentive compensation	14,373	20,949
Income taxes payable	10,909	11,746
Insurance	9,747	7,741
Warranty	5,035	4,888
Deferred revenue	11,773	9,455
Liability for uncertain tax positions	950	1,201
Accrued interest	1,366	1,354
Other	29,797	30,120
Total accrued expenses	$ 142,493	$ 150,751