Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Stock-Based Compensation Expense Items [Abstract]
Stock-based compensation expense	$ 115	$ 197	$ 273	$ 378
Additional Disclosures [Abstract]
Vesting period			48 months
Outstanding stock options (in shares)	3,979	3,164	3,979	3,164
Selling, General and Administrative Expense [Member]
Stock-Based Compensation Expense Items [Abstract]
Stock-based compensation expense	$ 115	$ 179	$ 272	$ 351
Research and Development Expense [Member]
Stock-Based Compensation Expense Items [Abstract]
Stock-based compensation expense	$ 0	$ 18	$ 1	$ 27
Stock Options [Member]
Additional Disclosures [Abstract]
Stock options granted (in shares)	1	267	1,264	2,937
Weighted average grant date fair value of stock options issued (in dollars per share)	$ 8.75	$ 103.52	$ 24.14	$ 258.19
Stock options vested (in shares)	472	32	1,347	60
Stock options expired or forfeited (in shares)	91	79	363	84
Exercise of stock options (in shares)	0	0	0	0
Weighted Average Assumptions used in Black-Scholes Option Pricing Model [Abstract]
Expected volatility	138.70%	132.13%	138.70%	156.35%
Expected Life of options (years)	5 years 6 months 3 days	6 years 29 days	5 years 6 months 3 days	6 years 2 months 23 days
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
Risk-free interest rate	3.94%	3.75%	3.94%	4.13%