Condensed Consolidated Statements of Comprehensive Income - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 1,206,578	$ 1,138,555	$ 10,893,830	$ 8,242,807
Other comprehensive income (loss), net of tax:
Interest rate swaps	(126,800)		(1,080,321)
Interest rate swaps		(457,899)		(583,423)
Defined benefit plans	16,791	(1,913)	50,373	(5,739)
Other comprehensive income (loss), net of tax	(110,009)	(459,812)	(1,029,948)	(589,162)
COMPREHENSIVE INCOME	$ 1,096,569	$ 678,743	$ 9,863,882	$ 7,653,645