Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details Textual)

v2.4.0.6
Fair Value Measurements (Details Textual) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Fair Value Measurements (Textual) [Abstract]    
Treasury securities matures on December 20, 2012 $ 7,457,000 $ 8,092,000
Contingent consideration 21,900,000  
Accrued expenses 8,000,000  
Other long-term liabilities 13,900,000  
US Treasury securities [Member]
   
Fair Value Measurements (Textual) [Abstract]    
Treasury securities maturity date 1 Dec. 20, 2012  
Treasury securities matures on December 20, 2012 15,000,000  
Accrued expenses 8,000,000  
Other long-term liabilities $ 13,900,000