Note 5 - Debt (Details Textual) - USD ($)							1 Months Ended	12 Months Ended
	Aug. 11, 2022	Jun. 01, 2022	Oct. 22, 2021	Feb. 17, 2021	Apr. 15, 2020	Jun. 01, 2018	Apr. 30, 2018	Dec. 31, 2022	Dec. 31, 2021	Feb. 19, 2021	Dec. 31, 2020	Jun. 24, 2020	Apr. 30, 2020	Mar. 14, 2018
Factoring Agreement, Advance Amount, Percentage of Accounts Receivable								85.00%
Factoring Agreement, Factoring Fee, First Thirty Days, Percentage of Invoice Face Value								0.98%
Factoring Agreement, Factoring Fee, After Thirty Days, Percentage of Invoice Face Value								0.0327%
Factoring Agreement, Minimum Invoice Fee								$ 1.50
Accounts Receivable Secured Debt Facility		$ 3,000,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)								2,523,521
Series E Preferred Stock Convertible Note Private Offering [Member] | Series E Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)							898,542
Shares Issued, Price Per Share (in dollars per share)							$ 2.57
Series E Warrants Issued With Note Payable Maturing May 2022 [Member]
Class of Warrant or Right, Issued During Period (in shares)						2
Series E Preferred Stock Warrants [Member]
Class of Warrant or Right, Issued During Period (in shares)						38,911	77,821
Proceeds from Warrant Exercises					$ 500,001
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share)						$ 2.57
Series D and Series E Preferred Stock Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)								116,733
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)								$ 2.57
Salem Loan Facility [Member]
Long-Term Line of Credit, Total	$ 5,000,000.0							$ 5,000,000.0
Line of Credit Facility, Maximum Borrowing Capacity	8,000,000.0
Line of Credit Facility, Remaining Borrowing Capacity	$ 3,000,000.0
Line of Credit Facility, Term (Year)	5 years
Line of Credit Facility, Interest Rate During Period	13.00%
Line of Credit Facility, Interest Rate During Period, Paid in Cash	11.00%
Line of Credit Facility, Interest Rate During Period, Paid-in-Kind	2.00%
Line of Credit Facility, Fee, Percentage	2.00%
Common Stock, Shares, Issued as Consideration (in shares)	150,000							150,000
Common Stock, Shares, Issuable as Consideration (in shares)	150,000
Extinguishment of Debt, Prepaid Premium Year 1, Percentage	3.00%
Extinguishment of Debt, Prepaid Premium Year 2, Percentage	2.00%
Extinguishment of Debt, Prepaid Premium Year 3, Percentage	1.00%
Interest Expense, Debt, Total								$ 172,000
Line of Credit, Net of Discount, Total								4,600,000
Common Stock, Value, Issued as Consideration								500,000
Paycheck Protection Program CARES Act [Member]
Long-Term Debt, Gross								0	$ 0		$ 535,800
Debt Instrument, Face Amount													$ 535,800
Interest Payable								0			3,611
Long-Term Debt, Excluding Current Maturities, Total											$ 90,000
Debt Instrument, Decrease, Forgiveness				$ 535,800
Spectrum Loan Facility [Member]
Percent, Cost of Eligible Equipment		75.00%
Monthly Reduction of Maximum Funds Available to Purchase Eligible Equipment, Percentage		0.021%
Percent, Net Amount of Eligible Inventory		50.00%
Additional Amount Allowed to be Borrowed		$ 350,000
Percent of Purchased Accounts Receivable Outstanding		50.00%
Percent of Eligible Accounts Receivable		85.00%
Accounts Receivable Secured Debt Facility		$ 3,000,000
Annual Facility Fees		$ 30,000
Debt Instrument, Base Floor		7.00%
Long-Term Line of Credit, Total								700,000
Interest Expense, Total								66,000
Line of Credit Facility, Maximum Borrowing Capacity								3,000,000.0
Spectrum Loan Facility [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		3.50%
SBA, Economic Injury Disaster Loan (EIDL) [Member]
Long-Term Debt, Gross								149,900
Debt Instrument, Face Amount												$ 150,000
Interest Payable								12,000
The 2021 Paycheck Protection Program Cares Act [Member]
Debt Instrument, Face Amount										$ 833,300
Note Payable Maturing From March 2022 to December 31, 2023 [Member]
Debt Instrument, Face Amount								$ 4,000,000
Note Payable Maturing From March 2022 to December 31, 2023 [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage								8.00%
Note Payable Maturing From March 2022 to December 31, 2023 [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage								12.00%
Note Payable Maturing May 2022 [Member]
Long-Term Debt, Gross					500,000
Debt Instrument, Face Amount						$ 1,000,000
Repayments of Long-term Debt, Total					$ 500,000
Pre 2021 Convertible Notes [Member]
Conversion of Stock, Amount Converted			$ 4,500,000
Debt Conversion, Converted Instrument, Shares Issued (in shares)			2,647,059
Preferred Stock, Convertible, Conversion Price (in dollars per share)			$ 1.70
Convertible Promissory Notes [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares)			24,130,642
Debt in Connection with Merger [Member]
Interest Payable			$ 51,627
Conversion of Stock, Amount Converted			$ 1,488,600
Debt Conversion, Converted Instrument, Shares Issued (in shares)			744,300
Note Payable Maturing December 2023 [Member]
Debt Instrument, Face Amount														$ 1,000,000
Debt Instrument, Interest Rate, Stated Percentage														8.00%