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Acquisition (Details) (Bios, USD $)
 1 Months Ended
May 31, 2012
May 15, 2012
Bios
    
Acquisition    
Earn-out period for determination of contingent consideration 3 years  
Minimum revenue required in three years subsequent to the acquisition for payment of contingent consideration   $ 22,127,000
Potential undiscounted future payments, low end of range   0
Potential undiscounted future payments, high end of range   6,710,000
Estimated amount of payment resulting from contingent consideration   2,240,000
Cash consideration   16,660,000
Contingent purchase price liability   2,140,000
Aggregate consideration   18,800,000
The purchase price was allocated as follows:    
Accounts receivable, net   478,000
Inventories, net   910,000
Other current assets   28,000
Property, plant and equipment   63,000
Intangible assets   8,200,000
Goodwill   9,190,000
Current liabilities   (69,000)
Total purchase price allocation   $ 18,800,000