Fixed Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property Plant and Equipment Gross
Land	$ 9,908	$ 9,908
Capitalized Software	87,102	44,152
Buildings	218,261	213,196
Machinery and equipment	897,532	879,222
Property, Plant and Equipment, Gross	1,212,803	1,146,478
Accumulated depreciation	(882,715)	(861,387)
Property, plant and equipment, net	330,088	285,091
Rental Property And Equipment
Rental property and equipment	407,495	462,244
Accumulated depreciation	(226,833)	(261,864)
Rental property and equipment, net	180,662	200,380
Depreciation expense	$ 136,000	$ 165,000	$ 158,000