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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)
 3 Months Ended
Mar. 31, 2013
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Mar. 31, 2012
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Dec. 31, 2012
Concentration risks      
Number of significant customers 1 3  
Aggregate dollar amount of net sales to significant customers $ 7,173,112 $ 7,429,984  
Revenue recognition      
Estimated contractual allowance 2,700,000   3,000,000
Change to reserve regarding non-contractual rebates 0    
Period for return of incorrect shipments 10 days    
Number of times overstocking returns are limited 2    
Period for return of product due to overstock 12 months    
Maximum percentage of distributor's total purchase for the prior 12-month period 1.00%    
Sales | Customer concentration risk
      
Concentration risks      
Aggregate dollar amount of net sales to significant customers $ 1,400,000 $ 3,200,000  
Percentage of net sales to significant customers 19.20% 42.70%  
Product components | Supplier concentration risk
      
Concentration risks      
Percentage of net sales to significant customers 70.80% 64.30%