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Asset Purchase Agreement (Details) (USD $)
 1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2012
Sep. 30, 2012
item
Mar. 31, 2012
Sep. 30, 2012
item
Mar. 30, 2012
Asset purchase agreement          
Net proceeds from sale of assets       $ 3,437,000  
Gain on sale of assets   1,435,000   3,291,000  
Sale of license of a portion of intellectual property pertaining to high-speed serial I/O technology
          
Asset purchase agreement          
Purchase agreement amount         4,300,000
Number of employees of entity's India subsidiary accepted employment in purchaser   15   15  
Net proceeds from sale of assets       2,200,000  
Holdback amount   1,900,000   1,900,000  
Holdback payment received 1,300,000        
Period over which portion of holdback is reserved       12 months  
Gain on sale of assets   $ 3,300,000 $ 1,400,000