Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2021	$ 17,284	$ 4	$ 138,181		$ (120,901)
Balance, shares at Dec. 31, 2021		40,389,975
Stock option exercises	3		3
Stock option exercises, shares		4,828
Issuance of common stock, net of issuance costs, value	3,791		3,791
Issuance of common stock, net of issuance costs, shares		700,549
Stock-based compensation expense	1,137		1,137
Unrealized loss on short-term investments	(50)			$ (50)
Net loss	3,069				3,069
Balance at Mar. 31, 2022	25,234	$ 4	143,112	(50)	(117,832)
Balance, shares at Mar. 31, 2022		41,095,352
Balance at Dec. 31, 2021	17,284	$ 4	138,181		(120,901)
Balance, shares at Dec. 31, 2021		40,389,975
Net loss	(13,405)
Balance at Sep. 30, 2022	11,560	$ 4	145,931	(69)	(134,306)
Balance, shares at Sep. 30, 2022		41,348,308
Balance at Mar. 31, 2022	25,234	$ 4	143,112	(50)	(117,832)
Balance, shares at Mar. 31, 2022		41,095,352
Issuance of common stock, net of issuance costs, value	94		94
Issuance of common stock, net of issuance costs, shares		57,438
Stock-based compensation expense	1,242		1,242
Unrealized loss on short-term investments	(32)			(32)
Net loss	(6,915)				(6,915)
Balance at Jun. 30, 2022	19,623	$ 4	144,448	(82)	(124,747)
Balance, shares at Jun. 30, 2022		41,152,790
Issuance of common stock, net of issuance costs, value	(85)		(85)
Issuance of common stock, net of issuance costs, shares		195,518
Stock-based compensation expense	1,568		1,568
Unrealized loss on short-term investments	13			13
Net loss	(9,559)				(9,559)
Balance at Sep. 30, 2022	11,560	$ 4	145,931	(69)	(134,306)
Balance, shares at Sep. 30, 2022		41,348,308
Balance at Dec. 31, 2022	$ 3,896	$ 4	147,476	(18)	(143,566)
Balance, shares at Dec. 31, 2022	41,690,383	41,690,383
Issuance of common stock, net of issuance costs, value	$ 119		119
Issuance of common stock, net of issuance costs, shares		410,836
Stock-based compensation expense	1,167		1,167
Unrealized loss on short-term investments	19			19
Net loss	(10,014)				(10,014)
Balance at Mar. 31, 2023	(4,813)	$ 4	148,762	1	(153,580)
Balance, shares at Mar. 31, 2023		42,101,219
Balance at Dec. 31, 2022	$ 3,896	$ 4	147,476	(18)	(143,566)
Balance, shares at Dec. 31, 2022	41,690,383	41,690,383
Stock option exercises, shares	89,807
Net loss	$ (26,681)
Balance at Sep. 30, 2023	$ (3,966)	$ 6	166,276	(1)	(170,247)
Balance, shares at Sep. 30, 2023	62,494,656	62,494,656
Balance at Mar. 31, 2023	$ (4,813)	$ 4	148,762	1	(153,580)
Balance, shares at Mar. 31, 2023		42,101,219
Stock option exercises	29		29
Stock option exercises, shares		56,008
Issuance of common stock, net of issuance costs - Registered direct offerings	14,539	$ 1	14,538
Issuance of common stock, net of issuance costs - Registered direct offerings, Shares		10,650,000
Exercise of prefunded warrants - Registered direct offerings, Shares		8,564,827
Exercise of prefunded warrants - Registered direct offerings, value	9	$ 1	8
Issuance of common stock, net of issuance costs, value	13		13
Issuance of common stock, net of issuance costs, shares		93,562
Stock-based compensation expense	1,162		1,162
Net loss	(8,364)				(8,364)
Balance at Jun. 30, 2023	2,575	$ 6	164,512	1	(161,944)
Balance, shares at Jun. 30, 2023		61,465,616
Stock option exercises	18		18
Stock option exercises, shares		33,799
Issuance of common stock, net of issuance costs - Registered direct offerings	16		(16)
Issuance of common stock, net of issuance costs, value	620		620
Issuance of common stock, net of issuance costs, shares		995,241
Stock-based compensation expense	1,142		1,142
Unrealized loss on short-term investments	2			(2)
Net loss	(8,303)				(8,303)
Balance at Sep. 30, 2023	$ (3,966)	$ 6	$ 166,276	$ (1)	$ (170,247)
Balance, shares at Sep. 30, 2023	62,494,656	62,494,656