CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - 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]
Revenue	$ 63,029	$ 32,667	$ 143,067	$ 75,882
Cost of revenue	21,334	15,765	55,727	39,021
Gross profit	41,695	16,902	87,340	36,861
Operating expenses:
Research and development	13,005	8,484	36,252	22,906
Selling, general and administrative	14,616	8,978	38,425	24,642
Total operating expenses	27,621	17,462	74,677	47,548
Income (loss) from operations	14,074	(560)	12,663	(10,687)
Interest expense		(110)		(726)
Other income (expense), net	(110)	3	(178)	51
Income (loss) before income taxes	13,964	(667)	12,485	(11,362)
Income tax expense	(4)		(67)	(1)
Net income (loss)	13,960	(667)	12,418	(11,363)
Net income (loss) attributable to common stockholders and comprehensive loss	$ 13,960	$ (667)	$ 12,418	$ (11,363)
Net income (loss) per share attributable to common stockholders, basic	$ 0.73	$ (0.04)	$ 0.67	$ (0.72)
Net income (loss) per share attributable to common stockholders, diluted	$ 0.66	$ (0.04)	$ 0.60	$ (0.72)
Weighted-average shares used to compute basic net income (loss) per share	19,149	16,818	18,658	15,737
Weighted-average shares used to compute diluted net income (loss) per share	21,252	16,818	20,770	15,737