Segment Information - Summary of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 7,887	$ 6,132	$ 23,306	$ 14,680
Cost of sales	5,838	4,931	17,422	12,550
Gross profit	$ 2,049	$ 1,201	$ 5,884	$ 2,130
Gross margin	26.00%	20.00%	25.00%	15.00%
Operating expenses
Selling, general and administrative	$ 8,495	$ 5,802	$ 22,400	$ 19,423
Research and development	4,633	4,920	14,310	14,551
Change in fair value of contingent earnout	19	30	12	(478)
Total operating expenses	13,147	10,752	36,722	33,496
Income (loss) from operations	(11,098)	(9,551)	(30,838)	(31,366)
Product
Segment Reporting Information [Line Items]
Revenue	6,186	4,675	18,166	10,690
Cost of sales	5,260	4,404	15,668	10,973
Gross profit	$ 926	$ 271	$ 2,498	$ (283)
Gross margin	15.00%	6.00%	14.00%	(3.00%)
Operating expenses
Selling, general and administrative	$ 7,961	$ 5,363	$ 20,893	$ 18,044
Research and development	4,214	4,560	13,075	13,463
Change in fair value of contingent earnout	19	30	12	(478)
Total operating expenses	12,194	9,953	33,980	31,029
Income (loss) from operations	(11,268)	(9,682)	(31,482)	(31,312)
Software
Segment Reporting Information [Line Items]
Revenue	1,701	1,457	5,140	3,990
Cost of sales	578	527	1,754	1,577
Gross profit	$ 1,123	$ 930	$ 3,386	$ 2,413
Gross margin	66.00%	64.00%	66.00%	60.00%
Operating expenses
Selling, general and administrative	$ 534	$ 439	$ 1,507	$ 1,379
Research and development	419	360	1,235	1,088
Total operating expenses	953	799	2,742	2,467
Income (loss) from operations	$ 170	$ 131	$ 644	$ (54)