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Property And Equipment (Schedule Of Property And Equipment) (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 154,659 $ 134,611
Less: Accumulated depreciation and amortization (66,119) (52,730)
Total property and equipment, net 88,540 81,881
Land [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 903 541
Building [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 10,973 9,370
Property and equipment, useful life, in years 25 years  
Machinery And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 104,818 84,443
Capitalized Software [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 4,793 3,693
Office Furniture And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 4,879 3,478
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 18,296 12,447
Leasehold improvements useful life [1] Life of lease (a)  
Rental Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 516 557
Property and equipment, useful life, in years 5 years  
Construction In Progress [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 9,481 $ 20,082
Minimum [Member] | Machinery And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life, in years 3 years  
Minimum [Member] | Capitalized Software [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life, in years 3 years  
Minimum [Member] | Office Furniture And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life, in years 3 years  
Maximum [Member] | Machinery And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life, in years 7 years  
Maximum [Member] | Capitalized Software [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life, in years 5 years  
Maximum [Member] | Office Furniture And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, 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.