Property, Plant And Equipment, Net (Components Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 860,864	$ 850,540
Accumulated depreciation and amortization	(474,314)	(456,299)
Property, plant and equipment, net	386,550	394,241
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	239,671	230,632
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	155,069	154,032
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	51,045	47,074
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,399	7,667
Clinical, Demonstration And Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	92,229	86,024
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	32,169	35,932
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	54,089	55,311
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 229,193	$ 233,868