Organization and Liquidity - Additional Information (Details) - USD ($)			1 Months Ended	3 Months Ended						9 Months Ended
	Apr. 15, 2024	Dec. 16, 2022	Apr. 30, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Organization And Liquidity [Line Items]
Issuance of common stock, Shares							59,000				114,000
Proceeds from issuance of common stock										$ 752,000	$ 1,556,000
Accumulated deficit				$ 163,135,000						163,135,000		$ 151,690,000
Net loss				(5,311,000)	$ 375,000	$ (6,480,000)	$ (5,667,000)	$ (5,878,000)	$ (4,975,000)	(11,416,000)	(16,520,000)
Cash				7,562,000			$ 2,810,000			7,562,000	$ 2,810,000	$ 13,143,000
Proceeds From Sale Of Other Assets 1				$ 28,000						331,000
Private Placement [Member]
Organization And Liquidity [Line Items]
Proceeds from issuance of common stock		$ 7,400,000								2,700,000
Net proceeds from Private Placement			$ 22,500,000
Private Placement [Member] | Subsequent Event
Organization And Liquidity [Line Items]
Rights from Private Placement	$ 22,500,000
Merger Agreement
Organization And Liquidity [Line Items]
Issuance of common stock, Shares		649,346
Proceeds from issuance of common stock		$ 7,400,000
Rights from Private Placement										$ 22,500,000