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Note 3 - Segment Information (Tables)
6 Months Ended
Mar. 31, 2025
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
  

Gas Utility

  

Investment in Affiliates

  

Consolidated Total

 

Three Months Ended March 31, 2025

            

Operating revenues

 $36,435,936  $  $36,435,936 

Corporate and other

        26,161 

Total revenues

  36,435,936      36,462,097 

Depreciation and amortization

  2,856,768      2,856,768 

Operating income (loss)

  10,417,419   (38,220)  10,379,199 

Corporate and other

        20,743 

Total operating income (loss)

  10,417,419   (38,220)  10,399,942 

Equity in earnings

     801,175   801,175 

Interest expense

  942,547   687,728   1,630,275 

Income before income taxes

  9,937,983   75,749   10,013,732 

Corporate and other

        20,743 

Total income before income taxes

 $9,937,983  $75,749  $10,034,475 
  

Gas Utility

  

Investment in Affiliates

  

Consolidated Total

 

Three Months Ended March 31, 2024

            

Operating revenues

 $32,632,331  $  $32,632,331 

Corporate and other

        27,045 

Total revenues

  32,632,331      32,659,376 

Depreciation and amortization

  2,697,707      2,697,707 

Operating income (loss)

  8,666,010   (55,285)  8,610,725 

Corporate and other

        18,984 

Total operating income (loss)

  8,666,010   (55,285)  8,629,709 

Equity in earnings

     1,229,384   1,229,384 

Interest expense

  911,804   654,809   1,566,613 

Income before income taxes

  7,844,299   518,705   8,363,004 

Corporate and other

        18,963 

Total income before income taxes

 $7,844,299  $518,705  $8,381,967 
  

Gas Utility

  

Investment in Affiliates

  

Consolidated Total

 

Six Months Ended March 31, 2025

            

Operating revenues

 $63,699,140  $  $63,699,140 

Corporate and other

        52,443 

Total revenues

  63,699,140      63,751,583 

Depreciation and amortization

  5,700,128      5,700,128 

Operating income (loss)

  17,758,695   (73,408)  17,685,287 

Corporate and other

        42,676 

Total operating income (loss)

  17,758,695   (73,408)  17,727,963 

Equity in earnings

     1,655,388   1,655,388 

Interest expense

  1,974,956   1,435,249   3,410,205 

Income before income taxes

  16,719,641   147,798   16,867,439 

Corporate and other

        42,676 

Total income before income taxes

 $16,719,641  $147,798  $16,910,115 
  

Gas Utility

  

Investment in Affiliates

  

Consolidated Total

 

Six Months Ended March 31, 2024

            

Operating revenues

 $57,024,185  $  $57,024,185 

Corporate and other

        54,543 

Total revenues

  57,024,185      57,078,728 

Depreciation and amortization

  5,395,414      5,395,414 

Operating income (loss)

  15,310,308   (68,688)  15,241,620 

Corporate and other

        40,126 

Total operating income (loss)

  15,310,308   (68,688)  15,281,746 

Equity in earnings

     2,697,219   2,697,219 

Interest expense

  1,880,741   1,322,145   3,202,886 

Income before income taxes

  13,640,033   1,306,239   14,946,272 

Corporate and other

        40,080 

Total income before income taxes

 $13,640,033  $1,306,239  $14,986,352 
  

Gas Utility

  

Investment in Affiliates

  

Consolidated Total

 

As of March 31, 2025:

            

Assets

 $283,632,682  $21,630,325  $305,263,007 

Corporate and other

        21,158,280 

Total assets

  283,632,682   21,630,325   326,421,287 

Gross additions to utility property

  10,692,338      10,692,338 

Gross investment in affiliates

 $  $35,164  $35,164 
  

Gas Utility

  

Investment in Affiliates

  

Consolidated Total

 

As of September 30, 2024:

            

Assets

 $280,508,989  $21,324,361  $301,833,350 

Corporate and other

        18,865,873 

Total assets

  280,508,989   21,324,361   320,699,223 

Gross additions to utility property

  22,094,406      22,094,406 

Gross investment in affiliates

 $  $18,258  $18,258