Property, Plant And Equipment (Components Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 873,989	$ 850,540
Accumulated depreciation and amortization	(473,194)	(456,299)
Property, plant and equipment, net	400,795	394,241
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	236,263	230,632
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	159,592	154,032
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	49,958	47,074
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,917	7,667
Clinical, Demonstration And Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	90,018	86,024
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	37,589	35,932
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	55,973	55,311
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 236,679	$ 233,868