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Stockholders' Equity - Registered Direct Offerings - Additional Information (Detail) - USD ($)			3 Months Ended		6 Months Ended
	Jul. 21, 2023	Feb. 03, 2023	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Aug. 08, 2025	Dec. 31, 2024	Feb. 08, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase common stock			600,000		600,000
Warrants exercise price			$ 0.66		$ 0.66
Common warrants liabilities			$ 1,222,000		$ 1,222,000			$ 1,548,000
Loss (gain) on change in fair value of warrant liability			(445,000)	$ 78,000	(326,000)	$ 1,796,000
Proceeds from sale of common stock, net of commission						648,000
Monte-Carlo [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common warrants liabilities			$ 396,000		$ 396,000			$ 414,000	$ 10,300,000
Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase common stock		2,000,000
Warrant [Member] \| Monte-Carlo [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock price			$ 0.64		$ 0.64			$ 0.75	$ 5.81
February 2023 Registered Direct Offering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of Transaction					On February 3, 2023, the Company entered into a securities purchase agreement relating in part to the purchase and sale
Date of agreement					Feb. 03, 2023
Number of warrants to purchase common stock			600,000		600,000			600,000
Loss (gain) on change in fair value of warrant liability			$ 42,000	(42,000)	$ 18,000	(402,000)
February 2023 Registered Direct Offering [Member] \| Monte-Carlo [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common warrants liabilities									$ 10,300,000
Pre-funded warrants liabilities			$ 396,000		396,000
Decrease in common warrants					$ 18,000
February 2023 Registered Direct Offering [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock number of shares issued in transaction		1,700,000
Number of warrants to purchase common stock		2,000,000
February 2023 Registered Direct Offering [Member] \| Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants exercise price		$ 0.51
Percentage of ownership on outstanding common stock immediately after exercise		4.99%
Percentage of ownership on outstanding common stock at election of holder		9.99%
February 2023 Registered Direct Offering [Member] \| Pre Funded Warrant and Common Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of ownership on outstanding common stock immediately after exercise	4.99%
Percentage of ownership on outstanding common stock at election of holder	9.99%
July 2023 Registered Direct Offering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of Transaction					On July 21, 2023, the Company issued to several institutional investors
Date of agreement					Jul. 21, 2023
Warrants exercise price			$ 4.89		$ 4.89
Loss (gain) on change in fair value of warrant liability			$ (404,000)	$ 36,000	$ (308,000)	1,400,000
Class of warrant or right issued			0		0
July 2023 Registered Direct Offering [Member] \| Black-Scholes [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common warrants liabilities	$ 5,800,000		$ 826,000		$ 826,000			$ 1,100,000
July 2023 Registered Direct Offering [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock number of shares issued in transaction	2,991,027
Common stock price	$ 0.0001
Number of warrants to purchase common stock	2,991,027
July 2023 Registered Direct Offering [Member] \| Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock price	$ 5.015
Number of warrants to purchase common stock			2,991,027		2,991,027
Warrants exercisable term	5 years
2021 Registration Statement and 2021 Sales Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from sale of common stock, net of commission						$ 648,000
Sale of common stock during period			0	0	0	702,090
Common stock weighted average price						$ 0.94
2024 Registration Statement [Member] \| Maximum [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available-for-sale Securities							$ 250,000,000