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Goodwill and Other Intangible Assets - Purchase Price Allocated (Detail) (USD $)
1 Months Ended 6 Months Ended
Apr. 01, 2009
Jun. 30, 2013
Mar. 31, 2009
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period   12 years 2 months 12 days  
Net tangible assets     $ 36,000
Total     5,135,000
Customer relationships and developed technology [Member]
     
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period   8 years  
Allocated Purchase Price     1,310,000
Customer relationships and developed technology [Member] | Minimum [Member]
     
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period 6 years    
Customer relationships and developed technology [Member] | Maximum [Member]
     
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period 9 years    
In-Process Research and Development [Member]
     
Acquired Finite-Lived Intangible Assets [Line Items]      
Allocated Purchase Price     1,340,000
Trade name [Member]
     
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period 15 years 15 years  
Allocated Purchase Price     310,000
Goodwill [Member]
     
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period       
Goodwill     $ 2,139,000