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LEASES - Narrative (Details)
3 Months Ended 9 Months Ended
Sep. 27, 2020
USD ($)
Sep. 27, 2020
USD ($)
Leases [Abstract]    
Operating lease, weighted average remaining lease term (years) 3 years 8 months 12 days 3 years 8 months 12 days
Operating lease, weighted average discount rate, percent 5.00% 5.00%
Operating lease, payments $ 601,248 $ 1,612,201
Operating lease, cost 525,679 1,536,718
Short-term lease, cost $ 108,359 $ 308,543