CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows - Operating Activities:
Net loss	$ (17,804)	$ (19,273)
Adjustments to reconcile net loss to net cash used by operating activities
Amortization of intangibles	528	245
Depreciation	442	200
Bad debt expense	307	(40)
Shares issued for services	0	1,820
Shares issued for inducement	0	45
Deferred taxes	28	0
Change in fair value of derivative liabilities	(1,599)	5,591
Loss on issuance of debt	3,572	0
Loss (Gain) on extinguishment of debt	(460)	503
Amortization of debt issuance costs	240	214
Amortization of debt discount	1,178	0
Accrued interest	929	191
Interest payable, related parties	150	696
Changes in operating assets and liabilities
Accounts receivable - trade	(345)	(1,280)
Inventory	1,430	(137)
Prepaid expenses	(218)	(502)
Other assets	(137)	11
Operating leases	0	(3)
Financing leases	0	2
Accounts payable	2,656	883
Accrued expenses	1,652	492
Accrued employee compensation	885	1,092
Contract liabilities	60	(530)
Net Cash Used by Operating Activities	(6,506)	(9,780)
Cash Flows - Investing Activities
Acquisition of UltraMIST, net of $4,000,000 note payable to seller	0	(20,000)
Purchases of property and equipment	(441)	(39)
Net Cash Flows Used by Investing Activities	(441)	(20,039)
Cash Flows - Financing Activities
Proceeds from sale of convertible preferred stock	0	2,450
Proceeds from convertible promissory note	1,928	1,100
Proceeds from SBA loan	1,033	614
Proceeds from PIPE offering, net of offering costs	0	21,456
Proceeds from senior promissory notes	940	13,347
Proceeds from stock option exercises	0	44
Proceeds from factoring	1,244	0
Proceeds from warrant exercise	0	10
Proceeds from related party advances	125	0
Payments of principal on convertible promissory notes, related parties, convertible promissory notes and SBA loans	(237)	(5,458)
Payments of principal on finance leases	(143)	(114)
Net Cash Flows Provided by Financing Activities	4,890	33,449
Effect of Exchange Rates on Cash	(53)	1
Net Change in Cash During Period	(2,110)	3,631
Cash at Beginning of Period	2,437	1,761
Cash at End of Period	327	5,392
Supplemental Information:
Cash paid for interest	1,993	0
Non-cash Investing and Financing Activities:
Reclassification of warrant liability due to cashless warrant exercise	2,030	0
Acquisition of UltraMIST partially financed with convertible promissory note	0	4,000
Conversion of short-term notes payable to equity	0	565
Conversion of advances from related parties to equity	0	18
Additions to right of use assets from new finance lease liabilities	0	128
Embedded conversion feature on convertible debt	2,740	561
Warrant issuance in conjunction with convertible notes	$ 758	$ 0