Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Cash Flows from Operating Activities
Net loss	$ (21,819)	$ (23,516)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	4,141	5,196
Depreciation and amortization	189	220
Amortization of right-of-use assets	339	326
Unrealized loss (gain) from investments	22	(468)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(70)	(119)
Accounts payable, accrued expenses and other current liabilities	698	(183)
Operating lease liabilities	(338)	(314)
Net Cash Used in Operating Activities	(16,838)	(18,858)
Cash Flows from Investing Activities
Maturities of investments	56,939	48,685
Purchase of investments	(55,567)	(56,520)
Purchases of property and equipment	(37)	(33)
Net Cash Provided by (Used in) Investing Activities	1,335	(7,868)
Cash Flows from Financing Activities
Proceeds from private placement offering	13,591	25,791
Proceeds from stock option exercises	46
Net Cash Provided by Financing Activities	13,637	25,791
Net Decrease in Cash and Cash Equivalents	(1,866)	(935)
Cash and cash equivalents - Beginning of year	3,620	4,555
Cash and cash equivalents - End of year	$ 1,754	$ 3,620