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GENERAL CREDIT AGREEMENT (Narrative) (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Short-term Debt [Line Items]    
Line of Credit, Current $ 1,671,990 $ 0
Revolving Credit Facility    
Short-term Debt [Line Items]    
Credit line maximum borrowing amount 8,000,000  
Letter of Credit    
Short-term Debt [Line Items]    
Credit line maximum borrowing amount $ 2,000,000