ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES.
Accumulated deficit	$ 701,216	$ 528,345
Restricted Cash and Investments	1,300	1,300
Prepaid Manufacturing	8,100	$ 9,700
Cash and cash equivalents, and investment securities	140,400
Impairment to goodwill	$ 0