Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2021
Apr. 16, 2021
Mar. 04, 2021
Jun. 08, 2020
Short-term Debt [Line Items]          
Payroll support program proceeds   $ (6,363)      
Payroll Support Programs          
Short-term Debt [Line Items]          
Debt instrument, face       $ 5,500 $ 16,400
CARES Act proceeds   3,700      
Payroll support program proceeds $ 2,900 2,700      
PSP 3          
Short-term Debt [Line Items]          
Debt instrument, face $ 5,500 $ 5,500 $ 5,500