Property and Equipment, Net (Schedule of Property and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Gross amount	$ 1,052,875	$ 906,003
Less accumulated depreciation and amortization	519,030	468,733
Total property and equipment, net	533,845	437,270
Land and improvements
Property, Plant and Equipment [Line Items]
Gross amount	8,725	8,701
Buildings and improvements
Property, Plant and Equipment [Line Items]
Gross amount	249,918	190,809
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross amount	74,602	66,917
Machinery and equipment
Property, Plant and Equipment [Line Items]
Gross amount	322,814	299,204
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Gross amount	53,210	51,661
Computer hardware and software
Property, Plant and Equipment [Line Items]
Gross amount	240,406	218,150
Construction in progress
Property, Plant and Equipment [Line Items]
Gross amount	$ 103,200	$ 70,561