00100 - Statement - CONSOLIDATED BALANCE SHEETS
link:presentationLink
link:calculationLink
link:definitionLink
00200 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
link:presentationLink
link:calculationLink
link:definitionLink
00400 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
link:presentationLink
link:calculationLink
link:definitionLink
40101 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Inventories (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40601 - Disclosure - OTHER LONG-TERM NOTES (Details)
link:presentationLink
link:calculationLink
link:definitionLink
00105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)
link:presentationLink
link:calculationLink
link:definitionLink
00300 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
link:presentationLink
link:calculationLink
link:definitionLink
10901 - Disclosure - IMPACT OF COVID-19
link:presentationLink
link:calculationLink
link:definitionLink
40102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Basic and diluted earnings (loss) per common share (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40103 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40201 - Disclosure - REVENUE - Disaggregation of Revenue (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40202 - Disclosure - REVENUE - Transfer of Goods and Services (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40203 - Disclosure - REVENUE - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40301 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40302 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Weighted-average assumptions (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40303 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Stock Option Activity (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40304 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Non-vested stock option activity (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40305 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40401 - Disclosure - STOCKHOLDERS' EQUITY (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40502 - Disclosure - RELATED PARTY TRANSACTIONS (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40602 - Disclosure - OTHER LONG-TERM NOTES - Additional information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40701 - Disclosure - PAYROLL PROTECTION PROGRAM (Details)
link:presentationLink
link:calculationLink
link:definitionLink
40801 - Disclosure - LEASE AMENDMENT (Details)
link:presentationLink
link:calculationLink
link:definitionLink
00090 - Document - Document and Entity Information
link:presentationLink
link:calculationLink
link:definitionLink
10101 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
link:presentationLink
link:calculationLink
link:definitionLink
10201 - Disclosure - REVENUE
link:presentationLink
link:calculationLink
link:definitionLink
10301 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION
link:presentationLink
link:calculationLink
link:definitionLink
10401 - Disclosure - STOCKHOLDERS' EQUITY
link:presentationLink
link:calculationLink
link:definitionLink
10501 - Disclosure - RELATED PARTY TRANSACTIONS
link:presentationLink
link:calculationLink
link:definitionLink
10601 - Disclosure - OTHER LONG-TERM NOTES
link:presentationLink
link:calculationLink
link:definitionLink
10701 - Disclosure - PAYROLL PROTECTION PROGRAM
link:presentationLink
link:calculationLink
link:definitionLink
10801 - Disclosure - LEASE AMENDMENT
link:presentationLink
link:calculationLink
link:definitionLink
20102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
link:presentationLink
link:calculationLink
link:definitionLink
30103 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
30203 - Disclosure - REVENUE (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
30303 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
30603 - Disclosure - OTHER LONG-TERM NOTES (Tables)
link:presentationLink
link:calculationLink
link:definitionLink