Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details)

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Revenue Recognition (Details) (Artech, USD $)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2012
Sep. 30, 2012
Dec. 31, 2011
Artech
     
Deferred revenue      
Deferred revenue   $ 394,000 $ 277,000
Recognized revenue of previously deferred revenue $ 65,000 $ 126,000