Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenues	$ 102,073	$ 88,544	$ 295,646	$ 245,258
Cost of goods sold	59,404	52,284	165,859	145,148
Gross profit	42,669	36,260	129,787	100,110
Operating expenses
Sales and marketing	17,195	11,609	48,999	28,044
General and administrative	28,550	18,217	87,865	55,586
Research and development	11,252	11,684	33,673	20,150
Total operating expenses	56,997	41,510	170,537	103,780
Gain on sale of assets	0	0	15,263	0
Operating loss	(14,328)	(5,250)	(25,487)	(3,670)
Interest expense	1,569	2,808	6,224	6,668
Gain on extinguishment of debt	0	0	(889)	0
Other loss (income)	3,940	(596)	3,209	(1,702)
Loss before income taxes	(19,837)	(7,462)	(34,031)	(8,636)
Income tax (benefit) expense	(6,422)	(1,076)	(2,967)	1,425
Net loss	$ (13,415)	$ (6,386)	$ (31,064)	$ (10,061)
Net loss per common share:
Basic (in dollars per share)	$ (0.20)	$ (0.10)	$ (0.46)	$ (0.20)
Diluted (in dollars per share)	$ (0.20)	$ (0.10)	$ (0.46)	$ (0.20)
Weighted-average common shares outstanding:
Basic (in shares)	67,623	66,820	67,409	49,858
Diluted (in shares)	67,623	66,820	67,409	49,858