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, 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)	(596,720)				(596,720)
Equity offering	225,758	$ 2,555	223,203
Equity offering, shares		153,375
Restricted stock awards	122,978		122,978
Dividends	(454,936)				(454,936)
Distribution of restricted stock to officers and directors	353		(316,886)			$ 317,239
Distribution of restricted stock to officers and directors, shares						21,220
Increase in deferred directors' compensation charged to expense	44,527			44,527
Balances at Dec. 31, 2020	62,335,886	$ 379,859	10,678,906	1,918,534	55,192,444	$ (5,833,857)
Balances, shares at Dec. 31, 2020		22,800,681
Balances, Treasury shares at Dec. 31, 2020						(390,267)
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)					(388,545)
Net income (loss)	$ 6,682,249				6,682,249
Private Placement	3,475,573	$ 25,315	3,450,258
Private Placement, shares		1,519,481
Purchase of treasury stock	(1,855)					$ (1,855)
Purchase of treasury stock, shares						(700)
Restricted stock awards	255,844		255,844
Dividends	(849,689)				(849,689)
Distribution of restricted stock to officers and directors	2,121	$ 1,921	(178,481)			$ 178,681
Distribution of restricted stock to officers and directors, shares		115,373				12,013
Increase in deferred directors' compensation charged to expense	67,570			67,570
Balances at Dec. 31, 2021	$ 88,340,552	$ 573,192	$ 36,741,266	$ 1,835,721	$ 54,798,980	$ (5,608,607)
Balances, shares at Dec. 31, 2021		34,405,287
Balances, Treasury shares at Dec. 31, 2021	(377,232)					(377,232)