Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Net loss	$ (15,406,000)	$ (10,270,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	1,638,000	931,000
Amortization of discounts on marketable securities	(441,000)	(648,000)
Non-cash lease expense	40,000	37,000
Depreciation	14,000	18,000
Changes in operating assets and liabilities:
Amounts receivable	75,000	(22,000)
Prepaid expenses and other assets	(453,000)	(156,000)
Deposits	1,108,000	(1,308,000)
Accounts payable	321,000	(167,000)
Accrued liabilities and operating lease liabilities	(1,643,000)	413,000
Net cash used in operating activities	(14,747,000)	(11,172,000)
Cash flows from investing activities:
Purchase of marketable securities	(16,370,000)	(18,047,000)
Maturities of marketable securities	31,967,000	27,000,000
Purchase of property and equipment	(18,000)	(9,000)
Net cash provided by investing activities	15,579,000	8,944,000
Cash flows from financing activities:
Proceeds from issuance of common shares, net of offering costs	0	11,747,000
Proceeds from the exercise of stock options	257,000	7,000
Principal payments on finance lease obligations	(5,000)	(3,000)
Net cash provided by (used in) financing activities	252,000	11,751,000
Net decrease in cash and cash equivalents	1,084,000	9,523,000
Cash and cash equivalents at beginning of period	3,025,000	4,543,000
Cash and cash equivalents at end of period	4,109,000	14,066,000
Supplemental disclosure of cash flow information:
Assets acquired under financing lease	0	30,000
Cash paid for income taxes	$ 12,000	$ 14,000