Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenues:
Product sales	$ 5,337	$ 7,481
Other revenue	796	568
Total revenues	6,133	8,049
Total cost of revenues	3,227	4,315
Gross profit	2,906	3,734
Total operating expenses
Selling, general and administrative	18,361	16,386
Research and development	3,267	5,078
Total operating expenses	21,628	21,464
Loss from operations	(18,722)	(17,730)
Interest income	375	52
Change in fair value of warranty liabilities	(11,986)	0
Other	113	61
Total other income (expense), net	(11,498)	113
Net loss	(30,220)	(17,617)
Less: convertible preferred stock dividends	(392)	0
Net loss attributable to common stockholders	$ (30,612)	$ (17,617)
Net loss per basic and diluted common share (in dollars per share)	$ (0.72)	$ (0.43)
Weighted average common shares used to compute net loss per basic and diluted common share (in shares)	42,324,190	41,174,812
Comprehensive loss:
Net loss	$ (30,612)	$ (17,617)
Net unrealized gain on short-term investments	0	100
Comprehensive loss	$ (30,612)	$ (17,517)