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LONG-TERM DEBT (Department of Economic and Community Development) (Details) - USD ($)
3 Months Ended
Jan. 08, 2018
Mar. 31, 2019
Mar. 31, 2018
Jan. 02, 2019
Dec. 31, 2018
Debt Instrument [Line Items]          
Proceeds from long-term debt     $ 300,000    
Interest rate (as a percent)       8.00%  
Service revenue, net   $ 917,000 796,000    
Total debt   399,000     $ 516,000
Department of Economic and Community Development (DECD)          
Debt Instrument [Line Items]          
Gross proceeds from grant received and loan $ 400,000        
Proceeds from grant $ 100,000        
Debt instrument, term 10 years        
Debt instrument, maturity date Dec. 31, 2027        
Interest rate (as a percent) 3.25%        
Total debt   267,000     274,000
Term loan | Department of Economic and Community Development (DECD)          
Debt Instrument [Line Items]          
Proceeds from long-term debt $ 300,000        
Debt issuance costs, net $ 31,000 27,000     $ 28,000
Amortization of debt issuance cost   1,000 $ 1,000    
2019   3,000      
2020   3,000      
2021   3,000      
2022   3,000      
2023   $ 3,000