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Commitments and Contingencies (Details) (USD $)
1 Months Ended 12 Months Ended
Oct. 31, 2000
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Operating lease obligations        
2012   $ 565,000    
2013   565,000    
2014   565,000    
2015   554,000    
2016   549,000    
Thereafter   3,502,000    
Total   6,300,000    
Leases, related disclosures        
Rent expense, net   600,000 900,000 900,000
Lease term for research and development facility 25 years      
Extended term of lease for office space   5 years    
Manufactured products
       
Purchase Obligations        
Purchase obligations with ALIGN   $ 200,000