Statements Of Stockholders' Equity - USD ($)	Total	Voting Common Stock [Member]	Capital in Excess of Par Value [Member]	Deferred Directors' Compensation [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Balances at Sep. 30, 2021	$ 78,708,739	$ 545,956	$ 33,213,645	$ 1,768,151	$ 48,966,420	$ (5,785,433)
Balances, shares at Sep. 30, 2021		32,770,433
Balances, Treasury shares at Sep. 30, 2021						(388,545)
Net income (loss)	20,409,272				20,409,272
Purchase of treasury stock	(1,855)					$ (1,855)
Purchase of treasury stock, shares						(700)
Restricted stock awards expense	2,211,673		2,211,673
Dividends declared	(2,257,901)				(2,257,901)
Distribution of restricted stock to officers and directors	2,122	$ 1,922	(178,481)			$ 178,681
Distribution of restricted stock to officers and directors, shares		115,373				12,013
Distribution of deferred directors' compensation		$ 1,024	462,736	(463,760)
Distribution of deferred directors' compensation, shares		61,452
Increase in deferred directors' compensation charged to expense	191,852			191,852
Equity issued to acquire assets	3,510,001	$ 25,315	3,484,686
Equity issued to acquire assets, shares		1,519,481
At-The-Market Offering	5,004,616	$ 21,824	4,982,792
At-The-Market Offering, shares		1,310,013
Balances at Sep. 30, 2022	$ 107,778,519	$ 596,041	44,177,051	1,496,243	67,117,791	$ (5,608,607)
Balances, shares at Sep. 30, 2022	35,776,752	35,776,752
Balances, Treasury shares at Sep. 30, 2022	377,232					(377,232)
Net income (loss)	$ 3,346,133				3,346,133
Purchase of treasury stock	(52,460)					$ (52,460)
Purchase of treasury stock, shares						(14,442)
Restricted stock awards expense	524,257		524,257
Dividends declared	(1,538,150)				(1,538,150)
Distribution of restricted stock to officers and directors		$ 2,690	(1,356,392)			$ 1,353,702
Distribution of restricted stock to officers and directors, shares		161,454				91,402
Increase in deferred directors' compensation charged to expense	44,827			44,827
Balances at Dec. 31, 2022	110,103,126	$ 598,731	43,344,916	1,541,070	68,925,774	$ (4,307,365)
Balances, shares at Dec. 31, 2022		35,938,206
Balances, Treasury shares at Dec. 31, 2022						(300,272)
Net income (loss)	13,920,800				13,920,800
Purchase of treasury stock	(402,704)					$ (402,704)
Purchase of treasury stock, shares						(120,939)
Restricted stock awards expense	2,205,910		2,205,910
Dividends declared	(2,823,735)				(2,823,735)
Distribution of restricted stock to officers and directors		$ 3,057	(3,850,079)			$ 3,847,022
Distribution of restricted stock to officers and directors, shares		183,517				268,422
Distribution of deferred directors' compensation			(24,330)	(281,497)		$ 305,827
Distribution of deferred directors' compensation, shares						21,312
Increase in deferred directors' compensation charged to expense	228,017			228,017
Balances at Dec. 31, 2023	$ 123,231,414	$ 601,788	$ 41,676,417	$ 1,487,590	$ 80,022,839	$ (557,220)
Balances, shares at Dec. 31, 2023	36,121,723	36,121,723
Balances, Treasury shares at Dec. 31, 2023	131,477					(131,477)