UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net product revenues	$ 59,674	$ 19,840
Cost of product sold	10,409	3,474
Gross profit	49,265	16,366
Operating expenses:
Research and development	4,679	3,431
Sales and marketing	15,506	13,254
General and administrative	14,547	9,290
Total operating expenses	34,732	25,975
Operating income (loss)	14,533	(9,609)
Loss on debt extinguishment		(22,639)
Other expense, net	(20)
Interest expense, net	(7,127)	(6,372)
Income (loss) before income taxes	7,386	(38,620)
Net income (loss) and comprehensive income (loss)	7,386	(38,620)
Accumulation of dividends on preferred stock		(10,445)
Net income (loss) available to common stockholders	$ 7,386	$ (49,065)
EARNINGS (LOSS) PER SHARE:
Basic	$ 0.13	$ (6.30)
Diluted	$ 0.13	$ (6.30)
Weighted average number of shares of common stock - basic	56,891,451	7,790,667
Weighted average number of shares of common stock - diluted	58,805,285	7,790,667