Condensed Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues	$ 1,859	$ 1,888
Cost of revenues	1,516	1,252
Gross profit	343	636
Operating expenses:
Research and development	1,062	1,356
Selling, general and administrative	4,370	3,538
Total operating expenses	5,432	4,894
Loss from operations	(5,089)	(4,258)
Interest expense, net	(416)	(392)
Other (expense) income, net	(12)	6
Net loss and comprehensive loss	(5,517)	(4,644)
Accretion of preferred stock dividends	(65)	(1,218)
Gain on exchange of Series A for Series A-1 convertible preferred stock	1,908	0
Net loss applicable to common stockholders	$ (3,674)	$ (5,862)
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (2.49)	$ (10.7)
Weighted average common shares used to compute net loss per share, basic and diluted (in shares)	1,477	548