Statements Of Stockholders' Equity - USD ($)	Total	At-the-market Offering [Member]	Common Stock [Member]	Common Stock [Member] At-the-market Offering [Member]	Capital in Excess of Par Value [Member]	Capital in Excess of Par Value [Member] At-the-market Offering [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 issued to acquire assets	225,758		$ 2,555		223,203
Equity issued to acquire assets, 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, 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)	(2,453,037)
Balances at Jun. 30, 2021	75,296,561		$ 503,136		25,844,372		1,701,110	53,033,376	$ (5,785,433)
Balances, shares at Jun. 30, 2021			30,200,226
Balances, Treasury shares at Jun. 30, 2021									(388,545)
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)
Net income (loss)	(499,723)							(499,723)
Cost of equity issuance	(29,240)				(29,240)
Restricted stock awards	161,170				161,170
Dividends	(289,997)							(289,997)
Distribution of restricted stock to officers and directors	(1,268)								$ (1,268)
Distribution of restricted stock to officers and directors, shares									(556)
Distribution of deferred directors' compensation			$ 409		339,913		(340,322)
Distribution of deferred directors' compensation, shares			24,545
Increase in deferred directors' compensation charged to expense	55,727						55,727
Balances at Mar. 31, 2021	61,732,555		$ 380,268		11,150,749		1,633,939	54,402,724	$ (5,835,125)
Balances, shares at Mar. 31, 2021			22,825,226
Balances, Treasury shares at Mar. 31, 2021									(390,823)
Net income (loss)	(1,356,594)							(1,356,594)
Equity issued	11,142,340		$ 102,876		11,039,464
Equity issued, shares			6,175,000
Equity issued to acquire assets	3,468,000		$ 19,992		3,448,008
Equity issued to acquire assets, shares			1,200,000
Purchase of treasury stock	(2,741)								$ (2,741)
Purchase of treasury stock, shares									(1,229)
Restricted stock awards	258,526				258,526
Dividends	(12,754)							(12,754)
Distribution of restricted stock to officers and directors	58				(52,375)				$ 52,433
Distribution of restricted stock to officers and directors, shares									3,507
Increase in deferred directors' compensation charged to expense	67,171						67,171
Balances at Jun. 30, 2021	75,296,561		$ 503,136		25,844,372		1,701,110	53,033,376	$ (5,785,433)
Balances, shares at Jun. 30, 2021			30,200,226
Balances, Treasury shares at Jun. 30, 2021									(388,545)
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
Equity issued to acquire assets	3,486,303		$ 25,315		3,460,988
Equity issued to acquire assets, shares			1,519,481
Cost of equity issuance		$ (10,730)				$ (10,730)
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)
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)	$ 11,250,804
Balances at Jun. 30, 2022	$ 97,963,170		$ 594,445		42,849,595		1,451,690	58,676,047	$ (5,608,607)
Balances, shares at Jun. 30, 2022			35,680,970
Balances, Treasury shares at Jun. 30, 2022	(377,232)								(377,232)
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)
Net income (loss)	(4,020,455)							(4,020,455)
Equity issued		8,017		$ 45		7,972
Equity issued, shares				2,710
Cost of equity issuance	(48,166)				(48,166)
Restricted stock awards	433,137				433,137
Distribution of deferred directors' compensation			$ 1,024		462,735		(463,759)
Distribution of deferred directors' compensation, shares			61,452
Increase in deferred directors' compensation charged to expense	35,461						35,461
Balances at Mar. 31, 2022	84,748,546		$ 574,261		37,596,944		1,407,423	50,778,525	$ (5,608,607)
Balances, shares at Mar. 31, 2022			34,469,449
Balances, Treasury shares at Mar. 31, 2022									(377,232)
Net income (loss)	8,589,010							8,589,010
Equity issued		$ 4,742,769		$ 20,184		$ 4,722,585
Equity issued, shares				1,211,521
Restricted stock awards	530,066				530,066
Dividends	(691,488)							(691,488)
Increase in deferred directors' compensation charged to expense	44,267						44,267
Balances at Jun. 30, 2022	$ 97,963,170		$ 594,445		$ 42,849,595		$ 1,451,690	$ 58,676,047	$ (5,608,607)
Balances, shares at Jun. 30, 2022			35,680,970
Balances, Treasury shares at Jun. 30, 2022	(377,232)								(377,232)