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Summary Of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Y
Dec. 31, 2012
Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items]      
Advertising costs incurred $ 2.5 $ 3.1 $ 0.9
Maximum estimated revenue-producing lives of computer software products from the date of release 3    
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Inputs Four    
Building | Minimum
      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 20 years    
Building | Maximum
      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 50 years    
Machinery and Office Equipment | Minimum
      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 4 years    
Machinery and Office Equipment | Maximum
      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 7 years    
Rental Equipment
      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 4 years    
Internal-Use Software | Minimum
      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 3 years    
Internal-Use Software | Maximum
      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 10 years