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Nature of Business and Basis of Presentation (Tables)
3 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of revenue and income (loss) from operations [Table Text Block]
      2024     2023  
Revenue for the three months ended        
  December 31 $ 2,053,000   $ 2,085,000  
  September 30 $ 3,027,000   $ 2,875,000  
  June 30 $ 2,680,000   $ 2,701,000  
  March 31 $ 1,935,000   $ 2,013,000  
               
Income (loss) from operations for the three months ended  
  December 31 $ (161,000 ) $ (60,000 )
  September 30 $ 481,000   $ 537,000  
  June 30 $ 832,000   $ 653,000  
  March 31 $ (13,000 ) $ (33,000 )