UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net product revenues	$ 73,821	$ 38,005	$ 133,495	$ 57,845
Cost of product sold	12,687	6,456	23,097	9,930
Gross profit	61,134	31,549	110,398	47,915
Operating expenses:
Research and development	6,498	4,169	11,177	7,600
Sales and marketing	17,022	12,443	32,529	25,697
General and administrative	14,302	7,628	28,848	15,772
Total operating expenses	37,822	24,240	72,554	49,069
Operating income (loss)	23,312	7,309	37,844	(1,154)
Loss on debt extinguishment				(22,639)
Other income (expense), net	4	(400)	(15)	(1,546)
Interest expense, net	(7,227)	(6,936)	(14,354)	(13,308)
Income (loss) before income taxes	16,089	(27)	23,475	(38,647)
Income taxes	(1,972)		(1,972)
Net income (loss) and comprehensive income (loss)	14,117	(27)	21,503	(38,647)
Accumulation of dividends on preferred stock		(10,446)		(20,891)
Net income (loss) available to common stockholders	$ 14,117	$ (10,473)	$ 21,503	$ (59,538)
EARNINGS (LOSS) PER SHARE:
Basic	$ 0.25	$ (1.34)	$ 0.38	$ (7.63)
Diluted	$ 0.24	$ (1.34)	$ 0.37	$ (7.63)
Weighted average number of shares of common stock - basic	56,940,840	7,805,848	56,916,282	7,798,928
Weighted average number of shares of common stock - diluted	58,592,876	7,805,848	58,635,195	7,798,928