Accrued Expenses (Components Of Accrued Expenses) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Accrued Expenses [Abstract]
Payroll and related items	$ 48,686	$ 51,728
Management incentive compensation	5,943	17,402
Income taxes payable	14,283	8,456
Deferred income taxes	168	167
Insurance	6,368	6,495
Warranty	4,328	4,417
Deferred revenue	6,471	7,954
Restructuring	5,253	5,875
Liability for uncertain tax positions	1,067	1,061
Accrued interest	9,180	1,424
Contingent consideration for acquisition	1,500	1,500
Other	26,008	24,217
Total accrued expenses	$ 129,255	$ 130,696