Consolidated Statements of Income - USD ($)	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Revenues	$ 84,641,232	$ 97,439,765
OPERATING EXPENSES:
Operations and maintenance	18,354,736	15,903,972
Taxes other than income taxes	2,694,652	2,324,314
Depreciation and amortization	10,518,094	9,764,678
Total operating expenses	67,559,472	79,761,285
OPERATING INCOME	17,081,760	17,678,480
Equity in earnings of unconsolidated affiliate	3,851,871	2,084,990
Other income, net	1,028,761	646,528
Interest expense	6,504,885	5,618,805
INCOME BEFORE INCOME TAXES	15,457,507	14,791,193
INCOME TAX EXPENSE	3,696,611	3,491,911
NET INCOME	$ 11,760,896	$ 11,299,282
EARNINGS PER COMMON SHARE:
Basic (in dollars per share)	$ 1.16	$ 1.14
Diluted (in dollars per share)	$ 1.16	$ 1.14
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic (in shares)	10,152,909	9,922,701
Diluted (in shares)	10,156,480	9,927,157
Gas Utility [Member]
Revenues	$ 84,533,101	$ 97,325,307
OPERATING EXPENSES:
Cost of gas and sale	35,967,987	51,742,718
Non-utility [Member]
Revenues	108,131	114,458
OPERATING EXPENSES:
Cost of gas and sale	$ 24,003	$ 25,603