Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net loss	$ (36,917,000)	$ (23,155,000)
Adjustments required to reconcile net loss to net cash used in operating activities:
Depreciation	892,000	1,169,000
Gain upon extinguishment of Paycheck Protection Program loan		(722,000)
Stock-based compensation	3,105,000	2,882,000
Non-cash interest expense		60,000
Payment of accreted interest for deferred consideration for asset acquisition		(586,000)
Changes in operating assets and liabilities:
Awards receivable	1,053,000	(2,428,000)
Accounts payable and accrued liabilities	3,665,000	184,000
Accrued compensation	793,000	472,000
Operating lease right-of-use asset and liability, net	3,643,000	499,000
Prepaid expenses and other current assets	(8,715,000)	(1,950,000)
Net cash used in operating activities	(32,481,000)	(23,575,000)
Investing activities:
Purchases of property and equipment	(2,211,000)	(1,304,000)
Net cash used in investing activities	(2,211,000)	(1,304,000)
Financing activities:
Principal payment of deferred consideration for asset acquisition		(1,414,000)
Payment of deferred offering costs	(500,000)
Proceeds from sale of common stock, net of offering costs	44,391,000	26,319,000
Proceeds from exercise of warrants and stock options	125,000	613,000
Net cash provided by financing activities	44,016,000	25,518,000
Net increase in cash, cash equivalents and restricted cash	9,324,000	639,000
Cash, cash equivalents and restricted cash, beginning of period	11,488,000	10,849,000
Cash, cash equivalents and restricted cash, end of period	20,812,000	11,488,000
Supplemental disclosure of cash flow information:
ROU asset obtained by assuming operating lease liabilities	8,669,000	26,056,000
Paycheck Protection Program loan forgiveness		722,000
Unpaid offering costs		13,000
Property and equipment included in accounts payable	$ 78,000	$ 38,000