Statements Of Stockholders' Equity - USD ($)	Total	Class A 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, 2018	$ 128,765,205	$ 281,502	$ 2,824,691	$ 2,950,405	$ 125,266,945	$ (2,558,338)
Balances, shares at Sep. 30, 2018		16,896,881
Balances, Treasury shares at Sep. 30, 2018						(145,467)
Net income (loss)	(40,744,938)				(40,744,938)
Purchase of treasury stock	(7,454,000)					$ (7,454,000)
Purchase of treasury stock, shares						(515,972)
Issuance of treasury shares to ESOP	372,274		(25,830)			$ 398,104
Issuance of treasury shares to ESOP, shares						26,629
Restricted stock awards	771,797		771,797
Dividends declared	(2,673,706)				(2,673,706)
Distribution of restricted stock to officers and directors	413	$ 7	(394,824)			$ 395,230
Distribution of restricted stock to officers and directors, shares		425				24,360
Distribution of deferred directors' compensation	(3)		(207,850)	(667,115)		$ 874,962
Distribution of deferred directors' compensation, shares						52,399
Common shares to be issued to directors for services	272,491			272,491
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	22,647,306
Balances, Treasury shares at Sep. 30, 2020	(411,487)					(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 offering	21,361,144	$ 164,560	21,196,584
Equity offering, shares		9,877,582
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)