CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Total revenues	$ 2,928	$ 20,365	$ 2,961	$ 7,539
Operating expenses:
Cost of sales, excluding amortization of acquired intangible assets	0	2,687	0	0
Research and development	10,412	15,368	16,178	14,880
Sales and marketing	8,174	29,772	1,512
General and administrative	8,901	17,939	11,545	11,235
Amortization of acquired intangible assets	0	2,460	0	0
Total operating expenses	27,487	68,226	29,235	26,115
Loss from operations	(24,559)	(47,861)	(26,274)	(18,576)
Other income (expense):
Interest and other income, net	367	1,054	101	91
Interest expense	(1,642)	(6,176)	(720)
Loss on extinguishment of debt		(3,810)
Change in fair value of derivative liability	(18,886)		(26,278)
Total other expense, net	(20,161)	(8,932)	(26,897)	91
Net loss	$ (44,720)	$ (56,793)	$ (53,171)	$ (18,485)
Net loss per share:
Basic and diluted	$ (0.53)	$ (0.54)	$ (1.15)	$ (0.52)
Weighted average common shares outstanding:
Basic and diluted	85,057	104,307	46,226	35,344
Net loss	$ (44,720)	$ (56,793)	$ (53,171)	$ (18,485)
Other comprehensive income (loss):
Foreign currency translation adjustments	1	1	5	(21)
Net unrealized gain on marketable securities				2
Other comprehensive income (loss)	1	1	5	(19)
Comprehensive loss	(44,719)	(56,792)	(53,166)	(18,504)
Product [Member]
Revenues:
Total revenues	0	16,824	0	0
License and Collaboration Agreement [Member]
Revenues:
Total revenues	1,883	1,361	1,343	6,569
Royalty Income [Member]
Revenues:
Total revenues	$ 1,045	$ 2,180	$ 1,618	$ 970