Condensed Consolidated Statements of Comprehensive Income - USD ($)	3 Months Ended	6 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 5,680,316	$ 4,670,090	$ 9,687,252	$ 7,104,252
Other comprehensive income (loss), net of tax:
Interest rate swaps	(1,216,574)		(953,521)
Interest rate swaps		(44,121)		(125,524)
Defined benefit plans	16,791	(1,913)	33,582	(3,826)
Other comprehensive income (loss), net of tax	(1,199,783)	(46,034)	(919,939)	(129,350)
COMPREHENSIVE INCOME	$ 4,480,533	$ 4,624,056	$ 8,767,313	$ 6,974,902

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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