Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net loss	$ (25,806,000)	$ (14,574,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	306,000	58,000
Stock-based compensation	3,520,000	1,200,000
Amortization of debt discount and issuance costs		1,983,000
Change in fair value of derivative liability		355,000
Gain on extinguishment of convertible notes		(928,000)
Changes in operating assets and liabilities:
Accounts receivable	(327,000)	(235,000)
Inventory	(80,000)	(4,000)
Prepaid expenses and other current assets	(903,000)	(1,407,000)
Accounts payable and accrued compensation	(218,000)	1,330,000
Accrued liabilities and deferred revenue	1,571,000	511,000
Net cash used in operating activities	(21,937,000)	(11,711,000)
Cash flows from investing activities:
Purchases of marketable securities	(36,906,000)
Purchases of property and equipment	(1,577,000)	(53,000)
Net cash used in investing activities	(38,483,000)	(53,000)
Cash flows from financing activities:
Proceeds from issuance of common stock		19,803,000
Proceeds from issuance of Convertible Preferred Stock		4,000,000
Payments of deferred underwriting fees	(1,363,000)
Payments of issuance costs in connection with Form S-1 registration statement	(77,000)
Proceeds from exercise of common stock warrants	782,000
Proceeds from exercise of stock options	401,000	759,000
Proceeds received from close of Business Combination		1,802,000
Proceeds from convertible notes payable		2,600,000
Payments of notes payable		(516,000)
Net cash provided by financing activities	59,671,000	28,448,000
Net increase/(decrease) in cash and cash equivalents	(749,000)	16,684,000
Cash and cash equivalents, beginning of period	15,374,000	4,753,000
Cash and cash equivalents, end of period	14,625,000	21,437,000
Supplemental cash flow information:
Issuance of common stock in litigation settlement	1,011,000
Purchases of property and equipment recorded in accounts payable	76,000	10,000
Debt discount and derivative liability at issuance of convertible notes payable		$ 270,000
Private placement
Cash flows from financing activities:
Proceeds from issuance of common stock	23,889,000
Series B-1 Convertible Preferred Stock
Cash flows from financing activities:
Proceeds from issuance of Convertible Preferred Stock	30,968,000
Series B-2 Convertible Preferred Stock
Cash flows from financing activities:
Proceeds from issuance of Convertible Preferred Stock	$ 5,071,000