Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net loss	$ (2,875)	$ (3,324)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	207	187
Non-cash lease expense	6	5
Depreciation	12	12
Change in assets and liabilities, net of the effects of the asset acquisition:
Prepaid expenses and other assets	(1,510)	(265)
Accounts payable	(54)	(2,106)
Accrued and other liabilities	(615)	(650)
Net cash used in operating activities	(4,829)	(6,141)
Financing activities
Proceeds from equity offering		10,000
Issuance costs		(908)
Net cash provided by financing activities		9,092
Net (decrease) increase in cash	(4,829)	2,951
Net foreign exchange difference	(1)	(5)
Cash at beginning of period	16,387	10,089
Cash at end of period	$ 11,557	$ 13,035