v3.22.2.2
Note 5 - Debt (Details Textual) - USD ($)
1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended
Sep. 22, 2022
Jul. 15, 2022
Mar. 24, 2022
Mar. 09, 2022
Apr. 26, 2021
Mar. 18, 2021
Feb. 11, 2021
Sep. 23, 2020
Aug. 10, 2017
Dec. 31, 2021
Nov. 30, 2021
May 31, 2022
Mar. 31, 2022
Mar. 31, 2021
Sep. 30, 2020
Sep. 30, 2022
Mar. 22, 2022
Dec. 21, 2021
Nov. 12, 2021
Mar. 24, 2021
Dec. 31, 2020
Repayments of Long-term Debt, Total                         $ 350,000 $ 3,000,000              
Long-term Debt, Total                   $ 14,434,000     $ 9,923,000                
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                   $ 3.57     $ 3.57                
Proceeds from Sale of Productive Assets, Total                   $ 272,000                      
Interest Expense, Total                         $ 172,000 $ 33,000              
Heat Waves Hot Oil Service LLC at Colorado [Member]                                          
Maximum Percentage on Advance to Accounts Receivable Factored     85.00%                                    
Maximum Amount on Advance to Accounts Receivable Factored     $ 10,000,000.0                                    
Receivable Fee, Percentage of Receivable Purchased in Addition to Fund Usage Daily Fee     0.10%                                    
Funds Usage Daily Fee, Percentage     0.021%                                    
Warrant Issued in Connection with Amended 2017 Credit Agreement [Member]                                          
Warrants and Rights Outstanding, Term (Year)               5 years                          
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)               1,000,000                          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)               $ 3.75                          
Warrants and Rights Outstanding               $ 1,400,000                          
Conversion from 2017 Credit Agreement Loan Concession to Common Stock [Member]                                          
Debt Conversion, Converted Instrument, Shares Issued (in shares)               533,334                          
Shares Issued, Price Per Share (in dollars per share)               $ 2.0775                          
Debt Conversion, Converted Instrument, Amount               $ 1,100,000                          
Revolving Credit Facility [Member]                                          
Long-term Debt, Total                   $ 14,102,000     0                
Utica Leaseco, LLC [Member] | Master Lease Agreement [Member]                                          
Interest Expense, Total                         2,000                
Debt Instrument, Unamortized Discount, Total                         $ 223,000                
Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member]                                          
Debt Instrument, Face Amount     $ 6,225,000                                    
Debt Instrument, Term (Year)     51 months                                    
Debt Instrument, Periodic Payment, Total     $ 168,075                                    
Debt Instrument, Surcharge Percentage Per Month     1.00%                                    
Debt Instrument, Percentage That Exceeds Prime Rate for Surcharge     0.25%                                    
Debt Instrument, Minimum Prime Rate Percentage That Triggers Surcharge     3.25%                                    
Debt Instrument, Covenant, Option, Payment of Lease Facility in Exchange for Reduced Payment schedule     $ 1,000,000.0                                    
Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member] | Minimum [Member]                                          
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid, Percentage of Principle     1.00%                                    
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid     $ 62,250                                    
Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member] | Maximum [Member]                                          
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid, Percentage of Principle     10.00%                                    
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid     $ 622,500                                    
The 2017 Credit Agreement [Member] | East West Bank [Member]                                          
Debt Instrument, Interest Rate, Stated Percentage               8.25%                          
Debt Instrument, Interest Rate, Calculated Monthly and Paid in Arrears               5.25%                          
Debt Instrument, Interest Rate, Accrued on Principal Balance               3.00%                          
Debt Instrument, Covenant, Minimum Liquidity                                         $ 1,500,000
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved                   80.00% 80.00%   80.00% 70.00%              
Debt Instrument, Covenant, Maximum Capital Expenditures                         $ 1,200,000                
Repayments of Long-term Debt, Total             $ 3,000,000.0                            
Long-term Debt, Total                   $ 13,500,000                      
Debt, Weighted Average Interest Rate                   8.25%                      
Line of Credit Facility, Remaining Borrowing Capacity                   $ 1,000,000.0                      
Long-term Debt, Gross                   14,100,000                      
Interest Payable                   38,000                      
Debt Instrument, Fee Amount                                     $ 70,000    
Gains (Losses) on Restructuring of Debt                             $ 11,900,000            
Unamortized Debt Issuance Expense                   $ 0                      
The 2017 Credit Agreement [Member] | East West Bank [Member] | Forecast [Member]                                          
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved                       80.00%       70.00%          
The 2017 Credit Agreement [Member] | East West Bank [Member] | Equipment Term Loan [Member]                                          
Debt Instrument, Face Amount               $ 17,000,000.0                          
The 2017 Credit Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]                                          
Line of Credit Facility, Maximum Borrowing Capacity, Percent of Eligible Receivables                 85.00%                        
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Trucks and Equipment                 85.00%                        
Line of Credit Facility, Decrease, Forgiveness               16,000,000.0                          
Line of Credit Facility, Maximum Borrowing Capacity               $ 1,000,000.0 $ 37,000,000.0                        
Debt Instrument, Term (Year)         10 years       3 years                        
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage               0.50%                          
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved                   80.00% 80.00%   80.00%                
Debt Instrument, Fee Amount                                     $ 70,000    
The 2022 Refinancing Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]                                          
Long-term Debt, Gross                   $ 14,100,000                      
Line of Credit Facility, Fair Value of Amount Outstanding                                       $ 13,800,000  
Repayments of Lines of Credit           $ 8,400,000                              
Lines of Credit, Percentage of Net Proceeds From Receivables Financing, Payments for Refinancing.           5.00%                              
Lines of Credit, Value of Net Proceeds From Receivables Financing, Payments for Refinancing.           $ 1,000,000.0                              
Long-Term Line of Credit, Noncurrent                   5,400,000                      
Cross River Working Capital Note [Member]                                          
Debt Instrument, Face Amount                                 $ 1,200,000        
Debt Instrument, Term (Year)       6 years                                  
Debt Instrument, Interest Rate, Stated Percentage       7.00%                                  
Subordinated Debt with Related Party [Member]                                          
Debt Instrument, Face Amount                                   $ 220,000      
Long-term Debt, Total                   220,000     $ 0                
Interest Payable                                   10,000      
Debt Instrument, Fee Amount                   $ 10,000                      
Deposit Assets, Total                                   $ 210,000      
Interest Expense, Total                         5,000                
Repayments of Subordinated Debt, Total                         $ 162,000                
Cross River Revolver [Member] | Cross River [Member] | Forecast [Member]                                          
Debt Instrument, Face Amount $ 750,000                                        
Debt Instrument, Term (Year) 1 year                                        
Debt Instrument, Interest Rate, Stated Percentage 8.00%                                        
July 2022 Convertible Note [Member] | Forecast [Member]                                          
Debt Instrument, Interest Rate, Stated Percentage   7.75%                                      
Proceeds from Convertible Debt   $ 1,200,000                                      
Debt Instrument, Convertible, Conversion Price (in dollars per share)   $ 1.69