Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Payroll and related items	$ 72,800	$ 78,944
Management incentive compensation	15,052	25,321
Income taxes payable	16,108	23,844
Insurance	8,843	10,422
Warranty	5,131	5,303
Deferred revenue	9,823	8,055
Lease liability	13,919	0
Restructuring	3,280	6,170
Liability for uncertain tax positions	830	980
Accrued interest	10,439	1,759
Contingent consideration for acquisition	3,375	0
Other	25,556	26,738
Total accrued expenses	$ 185,156	$ 187,536