Stock-Based Compensation - Classification of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Stock-Based Compensation [Abstract]
Stock-based compensation expense	$ 17	$ 115	$ 84	$ 273
Selling, General and Administrative Expense [Member]
Stock-Based Compensation [Abstract]
Stock-based compensation expense	14	115	79	272
Research and Development Expense [Member]
Stock-Based Compensation [Abstract]
Stock-based compensation expense	$ 3	$ 0	$ 5	$ 1