Consolidated Statements of Cash Flow (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (31,140)	$ (49,687)
Adjustments to reconcile net loss to net cash used in operating activities:
Inventory reserve	1,211	0
Depreciation and amortization	90	86
Stock-based compensation	3,245	1,872
Amortization of right of use assets	73	72
Amortization of debt discounts and issuance costs	0	3
Change in fair value of warrant liability	(12,282)	29,747
Loss on disposal of property and equipment	0	157
Changes in operating assets and liabilities
Accounts receivable	495	(3,253)
Inventory	(1,931)	(2,047)
Prepaid expenses and other assets	(78)	(223)
Accounts payable and accrued liabilities	(5,531)	5,590
Accrued bonuses	(51)	(345)
Accrued interest	0	(598)
Other current and long-term liabilities	(75)	(131)
Net cash used in operating activities	(45,974)	(18,757)
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from disposal of property and equipment	0	94
Net cash provided by investing activities	0	94
CASH FLOWS FROM FINANCING ACTIVITIES
Net proceeds from issuance of common stock	2,416	74,461
Proceeds from exercise of warrants	0	4,932
Repayments of long-term debt	0	(625)
Net cash provided by financing activities	2,416	78,768
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(43,558)	60,105
Cash and cash equivalents, beginning of period	69,392	22,449
Cash and cash equivalents, end of period	25,834	82,554
SUPPLEMENTAL INFORMATION
Income taxes	0	0
Interest	0	6
NON-CASH INVESTING AND FINANCING TRANSACTIONS
Cashless exercise of warrants	0	1,879
Preferred stock conversion feature and dividends	0	2,525
Conversion of preferred stock	$ 0	$ 8,361