ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2018
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