Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
REVENUES:
Product revenue, net	$ 3,469	$ 0	$ 4,449	$ 0
License revenue	10,000	0	10,000	0
OPERATING EXPENSES:
Cost of sales - product	253	0	358	0
Cost of sales - intangible amortization	200	0	200	0
Research and development	20,997	27,453	60,176	81,827
Selling, general and administrative	47,723	19,240	135,943	50,079
Loss from operations	(55,704)	(46,693)	(182,228)	(131,906)
OTHER (EXPENSE) INCOME:
Other expense, net	(195)	(78)	(212)	(174)
Interest expense	(2,763)	0	(2,763)	0
Interest income	819	585	1,983	1,996
NET LOSS	(57,843)	(46,186)	(183,220)	(130,084)
OTHER COMPREHENSIVE LOSS:
Unrealized (loss) gain from available-for-sale securities	(1)	(136)	(70)	47
COMPREHENSIVE LOSS	(57,844)	(46,322)	(183,290)	(130,037)
LOSS ATTRIBUTABLE TO COMMON STOCKHOLDERS - BASIC AND DILUTED (Note 10)	$ (57,843)	$ (46,186)	$ (183,220)	$ (130,084)
LOSS PER SHARE:
Basic and diluted (in dollars per share)	$ (1.31)	$ (1.07)	$ (4.21)	$ (3.02)
WEIGHTED AVERAGE SHARES:
Basic and diluted (in shares)	43,999,451	43,092,921	43,535,874	43,049,734