Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net loss	$ (4,730)	$ (2,464)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	159	60
Non cash interest related to convertible notes - related party		14
Depreciation	11	1
lease liability principal payment	(5)
Right-of-use leased asset depreciation	5
Change in assets and liabilities, net of the effects of the reverse asset acquisition:
Prepaid expenses and other assets	(1,202)	943
Accounts payable	637	(45)
Accrued and other liabilities	987	268
Net cash used in operating activities	(4,138)	(1,224)
Investing activities
Purchases of property and equipment	(2)
Net cash used in investing activities	(2)
Financing activities
Exercise of stock options	53
Net cash provided by financing activities	53
Net decrease in cash and restricted cash	(4,087)	(1,224)
Net foreign exchange difference	(22)	(3)
Cash and restricted cash at beginning of period	13,923	2,845
Cash and restricted cash at end of period	$ 9,814	$ 1,618