Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment	1
Revenues	$ 322	$ 513
Gross profit	322	513
Operating expenses:
Research and development expenses	1,915	2,676
Selling, general and administrative expenses	4,592	6,164
Total operating expenses	6,507	8,840
Loss from operations	(6,185)	(8,327)
Other income (expense), net:
Interest income	4	18
Interest expense	156	(57)
Gain on debt extinguishment	58	0
Other income (expense)	(205)	53
Total other income, net	13	14
Net loss	(6,172)	(8,313)
Reportable Segment
Segment Reporting Information [Line Items]
Revenues	322	513
Gross profit	322	513
Operating expenses:
Research and development expenses	1,915	2,676
Selling, general and administrative expenses	4,592	6,164
Total operating expenses	6,507	8,840
Loss from operations	(6,185)	(8,327)
Other income (expense), net:
Interest income	4	18
Interest expense	156	(57)
Gain on debt extinguishment	58	0
Other income (expense)	(205)	53
Total other income, net	13	14
Net loss	$ (6,172)	$ (8,313)