Property And Equipment (Schedule Of Property And Equipment, Net) (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total property and equipment		$ 167,360	$ 156,992
Less: Accumulated depreciation and amortization		(86,523)	(70,997)
Total property and equipment, net		80,837	85,995
Land [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment		903	903
Building [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment		11,032	11,007
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment		112,158	105,383
Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment		8,856	7,391
Office Furniture And Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment		4,950	4,714
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment		$ 24,287	17,867
Useful Life (in years)	[1]	Life of lease (a)
Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment		$ 154	149
Useful Life (in years)		5 years
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment		$ 5,020	$ 9,578
Minimum [Member] | Building [Member]
Property, Plant and Equipment [Line Items]
Useful Life (in years)		25 years
Minimum [Member] | Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life (in years)		2 years
Minimum [Member] | Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Useful Life (in years)		3 years
Minimum [Member] | Office Furniture And Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life (in years)		1 year
Maximum [Member] | Building [Member]
Property, Plant and Equipment [Line Items]
Useful Life (in years)		30 years
Maximum [Member] | Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life (in years)		7 years
Maximum [Member] | Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Useful Life (in years)		5 years
Maximum [Member] | Office Furniture And Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life (in years)		5 years

[1] Leasehold improvements are amortized on a straight-line basis over the shorter of (i) their estimated useful lives and (ii) the estimated or contractual life of the related lease.