Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Total revenue	$ 70,582	$ 53,919	$ 121,799	$ 152,986
Operating costs and expenses:
Cost of sales	9,415	9,317	18,491	17,302
Selling, general and administrative	29,347	33,527	60,284	79,033
Research and development	24,691	36,855	50,146	72,583
Total operating costs and expenses	63,453	79,699	128,921	168,918
Income (loss) from operations	7,129	(25,780)	(7,122)	(15,932)
Other income (expenses):
Interest income	66	908	452	1,780
Interest expense	(3,784)	(4,448)	(6,852)	(8,891)
Legal verdict expense	(93)		(186)	(16,350)
Loss on debt extinguishment		(8,103)		(8,103)
Other income (expenses)	77	(1)	170	(15)
Total other expenses	(3,734)	(11,644)	(6,416)	(31,579)
Net income (loss)	3,395	(37,424)	(13,538)	(47,511)
Net income (loss) applicable to common stockholders	$ 3,395	$ (37,424)	$ (13,538)	$ (47,511)
Net income (loss) per share of common stock—basic	$ 0.09	$ (0.97)	$ (0.34)	$ (1.23)
Net income (loss) per share of common stock—diluted	$ 0.08	$ (0.97)	$ (0.34)	$ (1.23)
Weighted-average shares of common stock outstanding—basic	39,432,030	38,647,775	39,361,596	38,565,258
Weighted-average shares of common stock outstanding—diluted	39,997,571	38,647,775	39,361,596	38,565,258
Product Revenue, Net
Revenue:
Total revenue	$ 48,771	$ 53,864	$ 97,380	$ 99,431
License Revenue
Revenue:
Total revenue	20,700		22,700	53,500
Royalty Revenue
Revenue:
Total revenue	$ 1,111	$ 55	$ 1,719	$ 55