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Property And Equipment (Schedule Of Property And Equipment) (Details) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 129,955 $ 87,685
Less: Accumulated depreciation and amortization (51,221) (42,477)
Total property and equipment, net 78,734 45,208
Land [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 541 541
Building [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 9,315 9,315
Property and equipment, useful life, in years 25 years  
Machinery And Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 84,083 56,962
Capitalized Software [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 4,026 3,872
Property and equipment, useful life, in years 5 years  
Office Furniture And Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 4,081 3,586
Property and equipment, useful life, in years 5 years  
Leasehold Improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 12,191 9,395
Leasehold improvements useful life Life of lease [1]  
Rental Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 582  
Property and equipment, useful life, in years 5 years  
Construction In Progress [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 15,136 $ 4,014
Minimum [Member] | Machinery 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  
[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.