Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
REVENUES:
Total revenue		$ 51,797	$ 50,113	$ 108,057	$ 98,037
OPERATING EXPENSES:
Cost of sales - product		4,394	4,070	8,319	7,931
Cost of sales - intangible amortization		200	200	399	399
Research and development, net of amounts reimbursable	[1]	26,950	44,881	58,391	83,890
Selling, general and administrative		32,143	38,231	66,240	74,664
Income (Loss) from operations		(11,890)	(37,269)	(25,292)	(68,847)
OTHER INCOME (EXPENSE):
Other (expense) income		(79)	(68)	(80)	(59)
Interest expense		(4,847)	(6,922)	(9,211)	(13,678)
Interest income		6	379	64	1,050
Gain on extinguishment of debt		0	0	1,960	0
NET LOSS		(16,810)	(43,880)	(32,559)	(81,534)
OTHER COMPREHENSIVE LOSS:
Unrealized loss from available-for-sale debt securities		0	774	(21)	105
COMPREHENSIVE LOSS		(16,810)	(43,106)	(32,580)	(81,429)
LOSS ATTRIBUTABLE TO COMMON STOCKHOLDERS - BASIC		(16,810)	(43,880)	(32,559)	(81,534)
LOSS ATTRIBUTABLE TO COMMON STOCKHOLDERS - DILUTED		$ (16,810)	$ (43,880)	$ (32,559)	$ (81,534)
LOSS PER SHARE:
Basic (in dollars per share)		$ (0.35)	$ (0.95)	$ (0.69)	$ (1.76)
Diluted (in dollars per share)		$ (0.35)	$ (0.95)	$ (0.69)	$ (1.76)
WEIGHTED AVERAGE SHARES:
Basic (in shares)		47,391,530	46,420,046	47,114,947	46,345,585
Diluted (in shares)		47,391,530	46,420,046	47,114,947	46,345,585
Product revenue, net
REVENUES:
Total revenue		$ 51,797	$ 50,113	$ 97,057	$ 98,037
License revenue
REVENUES:
Total revenue		$ 0	$ 0	$ 11,000	$ 0

[1] Amounts reimbursable for the three and six months ended June 30, 2021 were $18.5 million and $32.8 million, respectively, and $0 for the three and six months ended June 30, 2020.