Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenues	$ 383	$ 113
Cost of revenues	173	137
Gross profit (loss)	210	(24)
Operating expenses:
Research and development	4,183	6,084
Selling, general and administrative	6,892	13,011
Total operating expenses	11,075	19,095
Operating loss	(10,865)	(19,119)
Other income (expense):
Other income	667	1,043
Interest expense	(453)	(622)
Change in estimated fair value of earn-out liabilities	888	(2,013)
Total other income (expense)	1,102	(1,592)
Loss before income taxes	(9,763)	(20,711)
Net loss	(9,763)	(20,711)
Unrealized gain on short-term investments		23
Comprehensive loss	(9,763)	(20,688)
Net loss	$ (9,763)	$ (20,711)
Weighted average common stock outstanding - basic	78,526,669	78,079,013
Weighted average common shares outstanding - diluted	78,526,669	78,079,013
Net loss per share - basic	$ (0.12)	$ (0.27)
Net loss per share - diluted	$ (0.12)	$ (0.27)