ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment, Long-Lived Assets and Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	May 20, 2020
Property, Plant and Equipment [Line Items]
Market capitalization	$ 38,000	$ 72,000
Zyla Life Sciences
Property, Plant and Equipment [Line Items]
Goodwill	$ 17,432		$ 14,147
Minimum | Furniture and office equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Minimum | Laboratory equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Maximum | Furniture and office equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	7 years
Maximum | Laboratory equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years