Note 7 - Debt (Details Textual) - USD ($) | | | | | | | | | | 1 Months Ended | 3 Months Ended | 9 Months Ended | | | | |
Nov. 27, 2024 | Sep. 19, 2024 | Aug. 13, 2024 | Aug. 09, 2024 | Jul. 12, 2024 | Jun. 07, 2024 | Sep. 11, 2023 | Nov. 03, 2022 | Mar. 24, 2022 | Oct. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023 | Sep. 01, 2023 | Dec. 13, 2022 | Sep. 22, 2022 |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | | | | | | | | | | | $ 0.95 | | $ 0.95 | | $ 0.95 | | | |
Debt Conversion, Unamortized Debt Discount, Amount | | | | | | | | | | | | | $ 87,000 | $ 0 | | | | |
Inducement Costs Related to Note Conversions | | | | | | | | | | | | | 930,000 | 0 | | | | |
Proceeds From Financed Insurance | | | | | | | | | | | | | 1,800,000 | | | | | |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net | | | | | | | | | | | $ 76,000 | | 76,000 | | $ 295,000 | | | |
Amortization of Debt Discount (Premium) | | | | | | | | | | | 20,000 | $ 69,000 | 147,000 | 208,000 | | | | |
Chief Executive Officer [Member] | | | | | | | | | | | | | | | | | | |
Proceeds from Convertible Debt | | | | | | | | | | $ 100,000 | | | | | | | | |
November 2022 Convertible Note Into Common Stock [Member] | Cross River Partners, L.P. [Member] | | | | | | | | | | | | | | | | | | |
Debt Conversion, Original Debt, Amount | | | | | | $ 1,222,356 | | | | | | | | | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares) | | | | | | 4,495,609 | | | | | | | | | | | | |
Debt Conversion, Unamortized Debt Discount, Amount | | | | | | $ 87,000 | | | | | | | | | | | | |
Inducement Costs Related to Note Conversions | | | | | | | | | | | | | 495,000 | | | | | |
Conversion of New Convertible Notes into Equity [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | | | | | | | $ 0.5 | | | | | | | | | | | |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger | | | | | | | 25% | | | | | | | | | | | |
Conversion of New Convertible Notes into Equity [Member] | Scenario, Plan [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Term (Month) | | | | | | | 18 months | | | | | | | | | | | |
Stock Issued During Period, Value, Conversion of Convertible Securities | | | | | | | $ 5,000,000 | | | | | | | | | | | |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger | | | | | | | 25% | | | | | | | | | | | |
Debt Instrument, Convertible, Premium as A Percentage of Outstanding Principal | | | | | | | 25% | | | | | | | | | | | |
Conversion of Certain September and October 2023 Convertible Notes to Equity [Member] | | | | | | | | | | | | | | | | | | |
Inducement Costs Related to Note Conversions | | | | | | | | | | | | | 413,000 | | | | | |
Conversion of Certain September and October 2023 Convertible Notes to Equity [Member] | Director [Member] | | | | | | | | | | | | | | | | | | |
Debt Conversion, Original Debt, Amount | | | | | $ 50,000 | | | | | | | | | | | | | |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | | | | | 183,891 | | | | | | | | | | | | | |
Conversion of Certain September and October 2023 Convertible Notes to Equity [Member] | Cross River Partners, L.P. [Member] | | | | | | | | | | | | | | | | | | |
Debt Conversion, Original Debt, Amount | | | | | | $ 926,827 | | | | | | | | | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares) | | | | | | 3,408,707 | | | | | | | | | | | | |
Conversion of Certain September and October 2023 Convertible Notes to Equity [Member] | Director and Executive Chairman [Member] | | | | | | | | | | | | | | | | | | |
Debt Conversion, Original Debt, Amount | | | | | | $ 110,739 | | | | | | | | | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares) | | | | | | 407,281 | | | | | | | | | | | | |
Conversion of Certain September and October 2023 Convertible Notes to Equity [Member] | Kevin Chesser [Member] | | | | | | | | | | | | | | | | | | |
Inducement Costs Related to Note Conversions | | | | | | | | | | | 22,000 | | 22,000 | | | | | |
One Parcels of Real Property in North Dakota [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | | | | | | | | | | | | | | | | | | |
Disposal Group, Including Discontinued Operation, Consideration | | | | | | | | | | | | | | | | | $ 550,000 | |
Cross River Warrants [Member] | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | 5 years | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | 568,720 | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | | | | | | | | $ 2.11 | | | | | | | | | | |
Libertas Notes [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | $ 750,000 | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment, Total | | | 23,035 | | | | | | | | | | | | | | | |
Proceeds from Notes Payable | | | | | | | | | | | | | 1,029,000 | $ 0 | | | | |
Accounts Receivable, Held-for-Sale | | | $ 967,500 | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment, Percentage of Future Receipts | | | 4.33% | | | | | | | | | | | | | | | |
Buckshot Notes [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | $ 300,000 | | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment, Total | | 7,619 | | | | | | | | | | | | | | | | |
Accounts Receivable, Held-for-Sale | | $ 384,000 | | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment, Percentage of Future Receipts | | 4.37% | | | | | | | | | | | | | | | | |
Cross River Convertible Notes [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | $ 750,000 | | | | | | | | | $ 750,000 | | |
Proceeds from Convertible Debt | | | | | | | | | | 150,000 | | | | | | | | |
Chesser Convertible Note [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | 50,000 | | | | | | | | | $ 50,000 | | |
Angel Capital Convertible Note [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | 125,000 | | | | 625,000 | | 625,000 | | | | | |
Proceeds from Convertible Debt | | | | | | | | | | 125,000 | | | | | | | | |
Angel Capital Convertible Note [Member] | Subsequent Event [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment, Total | $ 759,353 | | | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment, Principal | 625,000 | | | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment, Interest | 99,479 | | | | | | | | | | | | | | | | | |
Legal Fees | $ 34,874 | | | | | | | | | | | | | | | | | |
Equigen Convertible Note [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | $ 187,500 | | | | | | | | | | | |
Proceeds from Convertible Debt | | | | | | | | | | $ 187,500 | | | | | | | | |
Cumulative Preferred Stock [Member] | | | | | | | | | | | | | | | | | | |
Preferred Stock, Dividend Rate, Percentage | | | | 10% | | | | | | | | | | | | | | |
Common Stock [Member] | Conversion of New Convertible Notes into Equity [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | | | | | | | $ 0.5 | | | | | | | | | | | |
Star Equity Holdings, Inc. [Member] | Cumulative Preferred Stock [Member] | | | | | | | | | | | | | | | | | | |
Investment Owned, Balance, Shares (in shares) | | | | 250,000 | | | | | | | | | | | | | | |
Cross River [Member] | Cross River Revolver [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | | | | | | | | | | | | $ 750,000 |
Star Equity Holdings, Inc. [Member] | Notes Payable, Other Payables [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Term (Month) | | | | 3 months | | | | | | | | | | | | | | |
Proceeds from Notes Payable | | | | $ 1,000,000 | | | | | | | | | | | | | | |
Debt Instrument, Interest Rate, Stated Percentage | | | | 20% | | | | | | | | | | | | | | |
Debt Instrument, Percentage Paid for First Extension | | | | 60% | | | | | | | | | | | | | | |
Debt Instrument, Percentage Paid for Second Extension | | | | 80% | | | | | | | | | | | | | | |
Cross River [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Interest Rate, Stated Percentage | | | | | | | 16% | | | | | | | | | | | |
Cross River [Member] | Cross River Exchange Note [Member] | | | | | | | | | | | | | | | | | | |
Payment of Financing and Stock Issuance Costs, Total | | | | | | | | $ 450,000 | | | | | | | | | | |
Cross River [Member] | November 2022 Convertible Note [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | | $ 1,200,000 | | | | | | | | | | |
Debt Instrument, Term (Month) | | | | | | | | 2 years | | | | | | | | | | |
Debt Instrument, Interest Rate, Stated Percentage | | | | | | | | 10% | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | | | | | | | | $ 2.11 | | | | | | | | | | |
Cross River [Member] | Minimum [Member] | November 2022 Convertible Note [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument Convertible, Price Per Share, Minimum Equity Offering Amount Received | | | | | | | | $ 2,000,000 | | | | | | | | | | |
Heat Waves Hot Oil Service LLC at Colorado [Member] | | | | | | | | | | | | | | | | | | |
Maximum Percentage on Advance to Accounts Receivable Factored | | | | | | | | | 85% | | | | | | | | | |
Maximum Amount on Advance to Accounts Receivable Factored | | | | | | | | | $ 10,000,000 | | | | | | | | | |
Receivable Fee, Percentage of Receivable Purchased in Addition to Fund Usage Daily Fee | | | | | | | | | 0.10% | | | | | | | | | |
Funds Usage Daily Fee, Percentage | | | | | | | | | 0.021% | | | | | | | | | |
Heat Waves Hot Oil Service LLC at Colorado [Member] | Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | | | | | | | | | $ 6,225,000 | | | | | | | | | |
Debt Instrument, Term (Month) | | | | | | | | | 51 months | | | | | | | | | |
Debt Instrument, Periodic Payment, Total | | | | | | | | | $ 168,075 | | | | 203,000 | | | | | |
Debt Instrument, Surcharge Percentage Per Month | | | | | | | | | 1% | | | | | | | | | |
Debt Instrument, Percentage That Exceeds Prime Rate for Surcharge | | | | | | | | | 0.25% | | | | | | | | | |
Debt Instrument, Minimum Prime Rate Percentage That Triggers Surcharge | | | | | | | | | 3.25% | | | | | | | | | |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | | | | | | | | | | | $ 623,000 | | $ 623,000 | | | | | |
Debt Instrument, Covenant, Option, Payment of Lease Facility in Exchange for Reduced Payment schedule | | | | | | | | | $ 1,000,000 | | | | | | | | | |
Heat Waves Hot Oil Service LLC at Colorado [Member] | Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | Minimum [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid, Percentage of Principle | | | | | | | | | 1% | | | | | | | | | |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | | | | | | | | | $ 62,250 | | | | | | | | | |
Heat Waves Hot Oil Service LLC at Colorado [Member] | Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | Maximum [Member] | | | | | | | | | | | | | | | | | | |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid, Percentage of Principle | | | | | | | | | 10% | | | | | | | | | |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | | | | | | | | | $ 622,500 | | | | | | | | | |