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LONG-TERM DEBT (Financed Insurance Loan) (Details) - USD ($)
Sep. 30, 2019
Jul. 31, 2019
Jan. 02, 2019
Dec. 31, 2018
Jul. 31, 2018
Debt Instrument [Line Items]          
Interest rate (as a percent)     8.00%    
Total debt $ 661,000     $ 516,000  
Financed Insurance Loan [Member]          
Debt Instrument [Line Items]          
Debt instrument, face amount   $ 400,000     $ 400,000
Interest rate (as a percent)   5.00%     4.89%
Total debt $ 388,000     $ 204,000