Property, Plant, and Equipment, Net (Schedule of Property, Plant, and Equipment, Net) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 637,175	$ 605,753
Less accumulated depreciation	(345,612)	(326,380)
Property, plant, and equipment, net	291,563	279,373
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	21,049	21,321
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	160,165	165,582
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	281,132	212,097
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	72,292	65,540
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	93,782	78,631
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 8,755	$ 62,582