CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Product sales, net	$ 45,922	$ 36,826	$ 86,939	$ 72,678
Other revenue	0	220	0	442
Total revenue	45,922	37,046	86,939	73,120
Cost of product sales	15,981	14,192	30,478	26,814
Gross profit	29,941	22,854	56,461	46,306
Research and development	5,253	4,792	10,465	9,652
Selling, general and administrative	30,649	27,144	60,134	53,009
Total operating expenses	35,902	31,936	70,599	62,661
Loss from operations	(5,961)	(9,082)	(14,138)	(16,355)
Other income (expense):
Interest income	1,095	148	1,934	236
Interest expense	(149)	(20)	(294)	(38)
Other (expense) income	(5)	(9)	(17)	103
Total other income	941	119	1,623	301
Net loss	$ (5,020)	$ (8,963)	$ (12,515)	$ (16,054)
Net loss per common share:
Basic (in USD per share)	$ (0.11)	$ (0.19)	$ (0.26)	$ (0.34)
Diluted (in USD per share)	$ (0.11)	$ (0.19)	$ (0.26)	$ (0.34)
Weighted-average common shares outstanding:
Basic (in shares)	47,572	47,117	47,480	47,052
Diluted (in shares)	47,572	47,117	47,480	47,052
Cost, Product and Service [Extensible List]	Product [Member]	Product [Member]	Product [Member]	Product [Member]
Revenue, Product and Service [Extensible List]	Product [Member]	Product [Member]	Product [Member]	Product [Member]