Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021
Operating activities:
Net loss	$ (5,072)	$ (8,768)	$ (8,734)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt access fees		14
Amortization of debt discount		1
Unrealized loss/(gain) on securities	8	99	(98)
Stock-based compensation - consultants		69	9
Stock-based compensation - employees		1,407	1,913
Changes in operating assets and liabilities:
Prepaid expenses		544	388
Other assets		5	2
Accounts payable		966	(894)
Accrued liabilities		(583)	(605)
Net cash used in operating activities	(3,390)	(6,246)	(8,019)
Financing activities:
Issuance of shares, options exercise		61	24
Long-term Debt			5,000
Debt discount			(14)
Capitalized deferred issuance costs			(42)
Net cash provided by financing activities		61	4,968
Decrease in cash and cash equivalents		(6,185)	(3,051)
Cash and cash equivalents - Beginning of period		21,100	30,344
Cash and cash equivalents - End of period	$ 14,915	$ 14,915	$ 27,293