Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (13,857)	$ (5,476)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Share-based compensation expense	1,781	36
Change in fair value of convertible promissory notes		1,165
Non-cash interest expense	58	224
Non-cash lease expense	66	44
Depreciation and amortization expense	74	2
Changes in operating assets and liabilities:
Accounts receivables	(2,708)	14,029
Inventory	(202)
Prepaid expenses and other current assets	(579)	(1)
Other non-current assets	125
Operating lease liabilities	(44)	(52)
Accounts payable and accrued liabilities	(4,129)	592
Net cash (used in) provided by operating activities	(19,415)	10,563
Cash flows from investing activities:
Purchase of property and equipment	(23)
Net cash used in investing activities	(23)
Cash flows from financing activities:
Issuance of common stock upon exercise of stock options	244
Issuance of common stock upon exercise of warrants	54
Net cash provided by financing activities	298
Net (decrease) increase in cash and cash equivalents	(19,140)	10,563
Cash and cash equivalents at beginning of year	148,989	4,455
Cash and cash equivalents at March 31, 2022 and 2021	129,849	15,018
Supplemental disclosure of cash flow information:
Interest paid during the period	58
Supplemental disclosure of non-cash activities:
Deferred transaction costs included in accounts payable and accrued liabilities	249	$ 151
Accrued property and equipment	$ 27