CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Revenue, Product and Service [Extensible List]	Product [Member]
Product sales, net	$ 41,017	$ 35,852
Other revenue	0	222
Total revenue	$ 41,017	36,074
Cost, Product and Service [Extensible List]	Product [Member]
Cost of product sales	$ 14,497	12,622
Gross profit	26,520	23,452
Research and development	5,212	4,860
Selling, general and administrative	29,485	25,865
Total operating expenses	34,697	30,725
Loss from operations	(8,177)	(7,273)
Other income (expense):
Interest income	839	88
Interest expense	(145)	(18)
Other (expense) income	(12)	112
Total other income	682	182
Net loss	$ (7,495)	$ (7,091)
Net loss per common share:
Basic (in USD per share)	$ (0.16)	$ (0.15)
Diluted (in USD per share)	$ (0.16)	$ (0.15)
Weighted-average common shares outstanding:
Basic (in shares)	47,387	46,985
Diluted (in shares)	47,387	46,985