v3.25.3
Note 5 - Line of Credit and Long-term Debt (Details Textual) - USD ($)
1 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Oct. 13, 2023
Apr. 12, 2021
Jun. 03, 2016
Aug. 14, 2012
Aug. 14, 2012
Sep. 30, 2025
Apr. 30, 2021
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Mar. 31, 2020
Aug. 29, 2025
Jun. 30, 2025
Mar. 31, 2025
Aug. 09, 2024
Dec. 31, 2023
Aug. 14, 2023
Mar. 31, 2023
Dec. 31, 2022
Dec. 14, 2022
Apr. 30, 2019
Property, Plant and Equipment, Net           $ 8,353,000   $ 8,353,000           $ 8,927,000              
Interest Paid, Excluding Capitalized Interest, Operating Activities               360,000 $ 330,000                        
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Prime Rate [Member] Prime Rate [Member] Prime Rate [Member] Prime Rate [Member]             Prime Rate [Member]                    
Unsecured Subordinated Loan [Member]                                          
Long-Term Debt, Gross           1,000,000   1,000,000           1,000,000              
Production Equipment [Member]                                          
Asset Acquisition, Consideration Transferred           63,000                              
Payments to Acquire Machinery and Equipment           12,000                              
Property, Plant and Equipment, Net           $ 53,000   $ 53,000                          
Purchase of John Deere Equipment [Member]                                          
Long-Term Debt, Gross                           760,000              
Purchase of John Deere Equipment [Member] | Production Equipment [Member]                                          
Debt Instrument, Interest Rate, Stated Percentage           8.00%   8.00%                          
Debt Instrument, Face Amount           $ 51,000   $ 51,000                          
Debt Instrument, Unamortized Discount           10,000   10,000                          
Term Loan Agreement, Maturing on August 14, 2032 [Member]                                          
Debt Instrument, Basis Spread on Variable Rate         1.00%                                
Long-Term Debt, Gross           $ 2,809,000   $ 2,809,000           $ 2,954,000              
Proceeds from Issuance of Debt       $ 5,500,000                                  
Debt Instrument Interest Payment Period (Month)       12 months                                  
Debt Instrument Amortization Period (Year)       19 years                                  
Debt Instrument, Reference Rate           7.50%   7.50%           7.50%              
Debt Instrument, One Time Origination and Guaranty Fees       $ 214,500                                  
Debt Instrument Annual Renewal Fee Payable Percentage       0.25% 0.25%                                
Debt Instrument Guaranteed Portion       80.00% 80.00%                                
Debt Issuance Costs, Current, Net           $ 62,000   $ 62,000           $ 68,000              
Term Loan Agreement, Promissory Note One [Member]                                          
Proceeds from Issuance of Debt       $ 2,250,000                                  
Term Loan Agreement, Promissory Note Two [Member]                                          
Proceeds from Issuance of Debt       $ 3,250,000                                  
Skywords Note [Member]                                          
Debt Instrument, Basis Spread on Variable Rate             1.00%                            
Debt Instrument, Reference Rate           7.50%   7.50%           7.50%              
Repayments of Long-term Debt, Total   $ 500,000         $ 500,000                            
Interest Paid, Excluding Capitalized Interest, Operating Activities   $ 1,900         1,900                            
Skywords Note [Member] | Unsecured Subordinated Loan [Member]                                          
Debt Instrument, Basis Spread on Variable Rate                     1.00%                    
Long-Term Debt, Gross           $ 1,000,000   $ 1,000,000           $ 1,000,000              
Debt Instrument, Face Amount                                         $ 1,500,000
Long-term Debt, Current Maturities, Total             $ 500,000                            
Skywords Amended Note [Member]                                          
Debt Instrument, Basis Spread on Variable Rate   1.00%                                      
Debt Instrument, Floor Interest Rate   5.00%         5.00%                            
Debt Instrument, Face Amount   $ 500,000                                   $ 1,000,000  
Minimum [Member] | Term Loan Agreement, Maturing on August 14, 2032 [Member]                                          
Debt Instrument, Interest Rate During Period         5.50%                                
Minimum [Member] | Skywords Note [Member]                                          
Debt Instrument, Interest Rate During Period             5.00%                            
First Foundation Bank [Member] | Term Loan, Converted From Line of Credit [Member]                                          
Debt Instrument, Basis Spread on Variable Rate 2.00%                                        
Debt Instrument, Periodic Payment $ 40,000             77,500                          
Debt Instrument, Floor Interest Rate 7.00%                                        
Long-Term Debt, Gross           370,000   370,000                          
Debt Instrument, Interest Rate During Period                   7.50%                      
First Foundation Bank [Member] | Minimum [Member]                                          
Debt Instrument, Interest Rate, Stated Percentage     5.25%                                    
First Foundation Bank [Member] | Revolving Credit Facility [Member]                                          
Debt Instrument, Basis Spread on Variable Rate     2.00%                                    
Line of Credit, Current $ 1,480,000         370,000   370,000           $ 760,000              
Line of Credit Facility, Maximum Borrowing Capacity                                   $ 2,000,000      
Related Party 1 [Member] | Revolving Credit Facility [Member]                                          
Debt Instrument, Interest Rate, Stated Percentage                         7.50% 7.50%              
Line of Credit, Current           4,200,000   4,200,000           $ 3,000,000              
Line of Credit Facility, Maximum Borrowing Capacity                   $ 4,600,000   $ 4,600,000     $ 4,000,000 $ 2,000,000 $ 2,000,000   $ 1,000,000    
Long-Term Line of Credit           $ 4,200,000   $ 4,200,000           $ 3,000,000