Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
OPERATING ACTIVITIES
Net loss	$ (7,240)	$ (7,589)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	54	21
Interest and amortization of discount on convertible notes		237
Financing loss on debt extinguishment		2,364
Changes in fair value of derivative warrant liability	(20)	(285)
Shares issued as consideration-vendor	74
Share-based compensation expense	1,399	479
Changes in assets and liabilities:
Other receivables	(40)	(14)
Other payables and accrued liabilities	463	(69)
Net cash used in operating activities	(5,310)	(4,856)
INVESTMENT ACTIVITIES
Purchase of property and equipment	(223)	(58)
Net cash used in investing activities	(223)	(58)
FINANCING ACTIVITIES
Inflows in connection with current assets and liabilities acquired in reverse recapitalization, net		317
Deferred financing fees	(18)
Issuance of common stock, net of issuance costs		12,702
Net cash (used in) provided by financing activities	(18)	13,019
(Decrease) increase in cash and cash equivalents	(5,551)	8,105
Cash and cash equivalents and restricted cash at the beginning of the year	10,814	2,709
Cash and cash equivalents and restricted cash at the end of the year	5,263	10,814
Non-cash financing transactions:
Cashless exercise of warrants
Rescission of share purchase agreement	3,375
Conversion of Series A Convertible Preferred Stock into common stock	30	90
Extinguishment of convertible notes in exchange for Series A Convertible Preferred Stock		2,083
Financing fees included in other payables and accrued liabilities	394
Temporary equity classified to permanent equity	$ 500