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LONG-TERM DEBT (Department of Economic and Community Development) (Details) - Department of Economic and Community Development (DECD) - USD ($)
3 Months Ended
Jan. 08, 2018
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
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%      
Term loan        
Debt Instrument [Line Items]        
Proceeds from long-term debt $ 300,000      
Debt issuance costs, net $ 31,000 $ 21,000   $ 22,000
Amortization of debt issuance cost   1,000    
2021   3,000    
2022   3,000    
2023   3,000    
2024   3,000    
2025   $ 3,000    
Term loan | Maximum        
Debt Instrument [Line Items]        
Amortization of debt issuance cost     $ 1,000