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, 2019	$ 79,309,533	$ 281,509	$ 2,967,984	$ 2,555,781	$ 81,848,301	$ (8,344,042)
Balances, shares at Sep. 30, 2019		16,897,306
Balances, Treasury shares at Sep. 30, 2019						(558,051)
Net income (loss)	(23,952,037)				(23,952,037)
Purchase of treasury stock	(7,635)					$ (7,635)
Purchase of treasury stock, shares						(632)
Issuance of treasury shares to ESOP	103,104		(974,806)			$ 1,077,910
Issuance of treasury shares to ESOP, shares						72,101
Restricted stock awards	743,897		743,897
Dividends declared	(1,652,164)				(1,652,164)
Distribution of restricted stock to officers and directors	94		(82,820)			$ 82,914
Distribution of restricted stock to officers and directors, shares						5,546
Distribution of deferred directors' compensation			(129,575)	(910,182)		$ 1,039,757
Distribution of deferred directors' compensation, shares						69,549
Common shares to be issued to directors for services	228,408			228,408
Equity offering	8,220,726	$ 95,795	8,124,931
Equity offering, shares		5,750,000
Balances at Sep. 30, 2020	62,993,926	$ 377,304	10,649,611	1,874,007	56,244,100	$ (6,151,096)
Balances, shares at Sep. 30, 2020		22,647,306
Balances, Treasury shares at Sep. 30, 2020						(411,487)
Net income (loss)	(6,217,237)				(6,217,237)
Purchase of treasury stock	(2,741)					$ (2,741)
Purchase of treasury stock, shares						(1,229)
Restricted stock awards	801,200		801,200
Dividends declared	(1,060,443)				(1,060,443)
Distribution of restricted stock to officers and directors	(856)		(369,260)			$ 368,404
Distribution of restricted stock to officers and directors, shares						24,171
Distribution of deferred directors' compensation	1	$ 410	339,913	(340,322)
Distribution of deferred directors' compensation, shares		24,545
Increase in deferred directors' compensation charged to expense	234,466			234,466
Equity issued to acquire assets	10,272,288	$ 61,685	10,210,603
Equity issued to acquire assets, shares		3,702,582
Equity offering	11,088,856	$ 102,875	10,985,981
Equity offering, shares		6,175,000
At-the market offering	599,279	$ 3,682	595,597
At-the market offering, shares		221,000
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	32,770,433
Balances, Treasury shares at Sep. 30, 2021	(388,545)					(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	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