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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of useful lives of property and equipment Depreciation is calculated using the straight-line method over the estimated useful lives of the respective assets, as follows:
 
Furniture and office equipment
3 - 5 years
Machinery and equipment
5 - 7 years
Laboratory equipment
3 - 5 years
Leasehold improvementsShorter of estimated useful life or lease term
Schedule of sales and accounts receivable customer concentration risk The three large, national wholesale distributors represent the vast majority of the Company’s business and represented the following percentage of consolidated revenue by customer and the percentage accounts receivable by customer related to product shipments for the years ended December 31, 2021 and 2020.
Consolidated revenueAccounts receivable related to product sales
2021202020212020
Cardinal Health34 %42 %44 %53 %
McKesson Corporation24 %14 %23 %20 %
AmerisourceBergen Corporation26 %13 %29 %18 %
Collegium— %11 %— %— %
All others16 %20 %4 %9 %
Total100 %100 %100 %100 %