Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2021	$ 76,268	$ 40	$ 170,604	$ (225)	$ (94,151)
Beginning balance, shares at Dec. 31, 2021		4,025,489
Repurchase and retirement of common stock	0
Stock compensation expense	1,971		1,971
Unrealized gain on available-for-sale securities	168			168
Net loss	(39,276)				(39,276)
Ending balance at Dec. 31, 2022	39,131	$ 40	172,575	(57)	(133,427)
Ending balance, shares at Dec. 31, 2022		4,025,489
Issuance of pre-funded warrants for the purchase of common stock, net of issuance costs	16,567		16,567
Repurchase and retirement of common stock, shares		(908,644)
Repurchase and retirement of common stock	(3,000)	$ (9)	(2,991)
Stock compensation expense	$ 971		971
Fractional shares adjustment due to reverse stock split, shares		(116)
Exercise of stock options, shares	0
Unrealized gain on available-for-sale securities	$ 57			57
Net loss	(21,935)				(21,935)
Ending balance at Dec. 31, 2023	$ 31,791	$ 31	$ 187,122	$ 0	$ 155,362
Ending balance, shares at Dec. 31, 2023		3,116,729