Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 218,808	$ 116,156	$ 84,074
Cost of revenue	79,346	58,224	44,516
Gross profit	139,462	57,932	39,558
Operating expenses:
Research and development	52,104	31,652	23,795
Selling, general and administrative	54,515	34,893	20,636
Total operating expenses	106,619	66,545	44,431
Income (loss) from operations	32,843	(8,613)	(4,873)
Interest expense		(726)	(1,714)
Other expense, net	(488)	(32)	(28)
Income (loss) before income taxes	32,355	(9,371)	(6,615)
Income tax (expense) benefit	(78)	(1)	8
Net income (loss)	32,277	(9,372)	(6,607)
Net income (loss) attributable to common stockholders and comprehensive income (loss)	$ 32,277	$ (9,372)	$ (6,607)
Net income (loss) per share attributable to common stockholders, basic	$ 1.70	$ (0.58)	$ (0.63)
Net income (loss) per share attributable to common stockholders, diluted	$ 1.53	$ (0.58)	$ (0.63)
Weighted-average shares used to compute basic net income (loss) per share	19,006	16,064	10,558
Weighted-average shares used to compute diluted net income (loss) per share	21,144	16,064	10,558