CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net (loss)	$ (7,300)	$ (8,121)
Adjustments to reconcile net loss to cash flows from operating activities:
Depreciation	10	10
Stock-based compensation	872	948
Changes in assets and liabilities:
Accounts receivables	(48)	2
Prepaid expenses and other assets	371	337
Accounts payable	(50)	(115)
Accrued payroll and related expenses	94	37
Other liabilities	(781)	306
Net cash used in operating activities	(6,832)	(6,596)
Cash flows from investing activities:
Purchase of property and equipment	0	(11)
Purchase of investments	(11,411)	(18,248)
Proceeds from sale or maturity of investments	12,247	24,854
Net cash provided by investing activities	836	6,595
Cash flows from financing activities:
Payment of payroll taxes on equity awards	(7)	(3)
Net cash used in financing activities	(7)	(3)
Net change in cash and cash equivalents	(6,003)	(4)
Cash and cash equivalents, beginning of period	23,296	26,289
Cash and cash equivalents, end of period	17,293	26,285
Non-cash transactions
ROU asset and lease liability at lease modification date (Note 8)	$ 600	$ 5,512