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SIGNIFICANT MARKET SEGMENTS AND CUSTOMERS (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
customer
Dec. 31, 2015
USD ($)
customer
Dec. 31, 2014
customer
Significant market segments      
Accounts receivable $ 6,393,228 $ 5,046,733  
Assets $ 83,153,638 $ 87,822,125  
International sales      
Significant market segments      
Direct sales percentage of sales 12.00% 13.00% 13.00%
DaVita Healthcare Partners, Inc.      
Significant market segments      
Accounts receivable $ 2,224,046 $ 2,156,000  
Number of customers | customer 1 1 1
DaVita Healthcare Partners, Inc. | Customer concentration      
Significant market segments      
Direct sales percentage of sales 52.00% 48.00% 49.00%
Baxter Healthcare Organization      
Significant market segments      
Accounts receivable $ 2,430,159 $ 2,088,000  
Baxter Healthcare Organization | Customer concentration      
Significant market segments      
Direct sales percentage of sales 24.00% 28.00%