CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Cash flows from operating activities
Net loss	$ (7,866,000)	$ (7,555,000)	$ (25,040,000)	$ (32,580,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense			1,296,000	1,305,000
Impairment of indefinite-lived intangible assets	0	0	0	4,000,000
Loss on assignment of receivables			30,000
Loss on extinguishment of debt		336,000		4,941,000
Amortization of operating lease right-of-use-assets			553,000	554,000
Expense on modification of warrants			86,000
Series B convertible preferred stock inducement expense			1,647,000
Series 3 warrants issued as an inducement to exercise equity-classified Series 1, Series 2 and Bridge warrants			3,696,000
Stock-based compensation			2,184,000	1,983,000
Issuance of common stock in exchange for services			916,000
Issuance of common stock as consideration paid under the Oasis Capital Equity Purchase Agreement			33,000
Amortization of debt issuance costs and debt discount			693,000	5,032,000
Change in fair value of financial instruments			2,491,000	(1,003,000)
Changes in assets and liabilities
Accounts receivable			(2,963,000)	(598,000)
Other receivable			(1,000)	6,000
Inventory			(90,000)	1,020,000
Prepaid expenses and other current assets			(1,061,000)	(466,000)
Other non-current assets			88,000
Operating lease liabilities			(337,000)	(347,000)
Accounts payable			4,000	(662,000)
Accrued expenses			4,482,000	(502,000)
Total cash used in operating activities			(11,217,000)	(17,317,000)
Cash flows from investing activities
Purchase of equipment			(7,000)
Total cash used in investing activity			(7,000)
Cash flows from financing activities
Proceeds from issuance of notes payable, net of issuance costs and debt discount			350,000
Proceeds from insurance premium financing			776,000
Proceeds from sale of receivables, net of debt discount and issuance costs of $640			4,542,000
Proceeds from issuance of short-term notes payable				5,050,000
Repayment of short-term notes payable				(5,050,000)
Repayment of notes payable			(3,140,000)	(100,000)
Proceeds from issuance of common stock				2,869,000
Payments of deferred offering costs			(7,000)
Total cash provided by financing activities			8,690,000	16,819,000
Net decrease in cash			(2,534,000)	(498,000)
Cash at beginning of period			3,883,000	2,568,000	$ 2,568,000
Cash at end of period	1,349,000	$ 2,070,000	1,349,000	2,070,000	3,883,000
Supplemental schedule of cash flow information
Cash paid for interest			343,000
Supplemental schedule of non-cash financing and investing activities
Accretion to redemption value of Series A redeemable convertible preferred stock			(1,332,000)
Private Investment in Public Entities
Cash flows from financing activities
Proceeds from issuance of common stock			668,000
2019 Bridge Note Warrants
Cash flows from financing activities
Proceeds from issuance of common stock			173,000
Notes payable
Supplemental schedule of non-cash financing and investing activities
Common stock issued as redemption of notes payable and related interest			1,498,000	15,345,000
Issuance of warrants				5,006,000
Accounts payable and accrued expenses
Supplemental schedule of non-cash financing and investing activities
Offering costs included in accounts payable and accrued expenses	166,000		166,000
PIPE Financing Warrants, Dec 2019
Cash flows from financing activities
Shares issued on conversion of Series 1, Series 2, and 2019 Bridge Note warrants; June 2020					$ 1,500,000
Ionic Series 2 Warrants
Cash flows from financing activities
Issuance costs			(25,000)
Series 2 warrants
Cash flows from financing activities
Proceeds from issuance of common stock			708,000
Bridge Note Warrants
Supplemental schedule of non-cash financing and investing activities
Reclassification of warrants from liability to equity				4,259,000
Series 1 warrants
Cash flows from financing activities
Proceeds from issuance of common stock			144,000
Supplemental schedule of non-cash financing and investing activities
Deemed dividend attributable to preferred stock				252,000
March 2019 letter of credit warrant
Supplemental schedule of non-cash financing and investing activities
Issuance of warrants				116,000
Reclassification of warrants from liability to equity				71,000
Series 1, Series 2, and 2019 Bridge Note warrants May 2020
Cash flows from financing activities
Payment of underwriting discounts, commissions and other associated offering costs			(461,000)
Shares issued on exercise of warrants			3,752,000
Series 1, Series 2, and 2019 Bridge Note warrants June 2020
Cash flows from financing activities
Shares issued on conversion of Series 1, Series 2, and 2019 Bridge Note warrants; June 2020			359,000
Series 1 and Series 2 warrants
Cash flows from financing activities
Shares issued on exercise of warrants			565,000
Supplemental schedule of non-cash financing and investing activities
Deemed dividend attributable to preferred stock			856,000
Series 3 warrants
Supplemental schedule of non-cash financing and investing activities
Shares issued on exercise of Series B convertible preferred shares			5,993,000
Stock Issued			5,993,000
Underwriter Settlement Agreement
Adjustments to reconcile net loss to net cash used in operating activities:
Issuance of warrants and common stock in Underwriter settlement agreement			76,000
Cash flows from financing activities
Issuance costs			(185,000)
Common Stock To Oasis Put Exercise
Cash flows from financing activities
Payment of underwriting discounts, commissions and other associated offering costs			(13,000)
Proceeds from shares issued on exercise of Oasis Capital an Equity Purchase Agreement put options, net of issuance costs of $13			10,000
Series B convertible preferred stock
Cash flows from financing activities
Proceeds from issuance of common stock				3,876,000
Supplemental schedule of non-cash financing and investing activities
Shares issued on exercise of Series B convertible preferred shares			476,000	1,831,000
Stock Issued			476,000	1,831,000
Deemed dividend attributable to preferred stock				3,876,000
Series A convertible preferred stock
Supplemental schedule of non-cash financing and investing activities
Accretion to redemption value of Series A redeemable convertible preferred stock			1,332,000
Extinguishment of Series A redeemable convertible preferred stock			11,227,000
Oasis Series B-2 convertible preferred stock
Supplemental schedule of non-cash financing and investing activities
Conversion of Oasis Series B-2 convertible preferred stock into common stock			320,000
Series A
Supplemental schedule of non-cash financing and investing activities
Extinguishment of Series A redeemable convertible preferred stock			150,000
Series C perpetual preferred stock
Supplemental schedule of non-cash financing and investing activities
Shares issued on exercise of Series B convertible preferred shares			4,717,000
Stock Issued			4,717,000
Deemed dividend attributable to preferred stock	$ 56,000		56,000
Series D perpetual preferred stock
Supplemental schedule of non-cash financing and investing activities
Shares issued on exercise of Series B convertible preferred shares			6,359,000
Stock Issued			$ 6,359,000
Class A units
Cash flows from financing activities
Proceeds from issuance of common stock				2,074,000
Payment of underwriting discounts, commissions and other associated offering costs				(875,000)
Class B units
Cash flows from financing activities
Payment of underwriting discounts, commissions and other associated offering costs				(1,635,000)
Class A and B units | Series 2 warrants
Cash flows from financing activities
Proceeds from issuance of common stock				5,305,000
Class A and B units | Series 1 warrants
Cash flows from financing activities
Proceeds from issuance of common stock				$ 5,305,000