Organization (Details)			3 Months Ended	6 Months Ended
	Feb. 24, 2025	Aug. 21, 2024 USD ($)	Jun. 30, 2025 USD ($) shares	Jun. 30, 2025 USD ($) shares	Dec. 31, 2024 USD ($)
Organization
Split ratio	0.01389
Cash and cash equivalents			$ 8,439,000	$ 8,439,000	$ 13,000
Accumulated deficit			$ (429,144,000)	(429,144,000)	$ (431,597,000)
Net proceeds				$ 84,000
At the market offering
Organization
Percentage of aggregate gross proceeds from sale of common stock				3.00%
Issuance of shares related to at-the-market offering, net (in shares) | shares			112,503	273,094
Net proceeds			$ 84,000	$ 200,000
Common stock remained available to be sold under the ATM			$ 49,800,000	$ 49,800,000
Maximum | At the market offering
Organization
Proceeds from issuance of public offering shares, net		$ 50,000,000