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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2012
customer
Sep. 30, 2011
customer
Sep. 30, 2012
customer
count
Sep. 30, 2011
customer
Concentration risks        
Number of significant customers 2 3 3 4
Concentration risk amount $ 9,444,157 $ 8,270,608 $ 25,602,046 $ 25,994,211
Revenue recognition        
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        
Concentration risk amount $ 3,400,000 $ 4,100,000 $ 10,600,000 $ 13,000,000
Concentration risk (as a percent) 35.60% 49.60% 41.30% 50.10%
Product components | Supplier concentration risk
        
Concentration risks        
Concentration risk (as a percent) 71.90% 62.80% 69.60% 68.60%