CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net sales	$ 2,986,000	$ 2,921,000	$ 5,907,000	$ 5,733,000
Cost of sales	2,310,000	2,122,000	4,508,000	3,923,000
Gross profit	676,000	799,000	1,399,000	1,810,000
Costs and expenses:
Research and development	3,903,000	5,820,000	9,076,000	12,788,000
Sales, general and administrative	5,379,000	7,564,000	11,084,000	17,669,000
Total costs and expenses	9,282,000	13,384,000	20,160,000	30,457,000
Loss from operations	(8,606,000)	(12,585,000)	(18,761,000)	(28,647,000)
Other income (expense):
Gain on extinguishment of accounts payable	743,000	0	743,000	0
Loss on fair value adjustments	(1,002,000)	(5,030,000)	(2,219,000)	(5,030,000)
Foreign currency exchange gain (loss)	(263,000)	25,000	(244,000)	258,000
Interest income	116,000	255,000	316,000	675,000
Other income (expense), net	13,000	40,000	(614,000)	85,000
Total other expense, net	(2,982,000)	(19,994,000)	(7,057,000)	(20,727,000)
Net loss before income taxes	(11,588,000)	(32,579,000)	(25,818,000)	(49,374,000)
Provision for income taxes	0	(156,000)	0	(156,000)
Net loss	$ (11,588,000)	$ (32,735,000)	$ (25,818,000)	$ (49,530,000)
Basic net loss per share (in usd per share)	$ (0.50)	$ (2.97)	$ (1.16)	$ (4.75)
Diluted net loss per share (in usd per share)	$ (0.50)	$ (2.97)	$ (1.16)	$ (4.75)
Basic weighted average shares outstanding (in shares)	23,058	11,009	22,250	10,420
Diluted weighted average shares outstanding (in shares)	23,058	11,009	22,250	10,420
Other comprehensive loss:
Net loss	$ (11,588,000)	$ (32,735,000)	$ (25,818,000)	$ (49,530,000)
Net unrealized gain on debt securities available for sale	0	4,000	0	28,000
Foreign currency translation adjustment	169,000	(26,000)	163,000	(281,000)
Comprehensive loss	(11,419,000)	(32,757,000)	(25,655,000)	(49,783,000)
Nonrelated Party
Other income (expense):
Interest expense	(2,589,000)	(1,175,000)	(5,039,000)	(1,593,000)
Loss on extinguishment of debt	0	(6,550,000)	0	(6,550,000)
Related Party
Other income (expense):
Interest expense	0	(804,000)	0	(1,817,000)
Loss on extinguishment of debt	$ 0	$ (6,755,000)	$ 0	$ (6,755,000)