Condensed Consolidated Unaudited Statements Of Shareholders Equity - USD ($)	Common Stock	Treasury Stock	Additional Paid in Capital	Retained Earnings	Total
Balance at Sep. 30, 2018	$ 8,441	$ (21,324,752)	$ 22,069,098	$ 63,848,030	$ 64,600,817
Balance (in shares) at Sep. 30, 2018	844,089	(228,312)
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(524,866)	(524,866)
Compensation expense and issuance of stock in connection with equity-based awards	$ 120		1,116,075		1,116,195
Compensation expense and issuance of stock in connection with equity-based awards (in shares)	11,950
Repurchase of common stock		$ (3,186,987)			(3,186,987)
Repurchase of common stock (in shares)		(34,960)
Net income				3,434,215	3,434,215
Balance at Jun. 30, 2019	$ 8,561	$ (24,511,739)	23,185,173	66,757,379	65,439,374
Balance (in shares) at Jun. 30, 2019	856,039	(263,272)
Balance at Mar. 31, 2019	$ 8,561	$ (24,511,598)	23,148,372	66,203,466	64,848,801
Balance (in shares) at Mar. 31, 2019	856,039	(263,271)
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(111,766)	(111,766)
Compensation expense and issuance of stock in connection with equity-based awards			36,801		36,801
Repurchase of common stock		$ (141)			(141)
Repurchase of common stock (in shares)		(1)
Net income				665,679	665,679
Balance at Jun. 30, 2019	$ 8,561	$ (24,511,739)	23,185,173	66,757,379	65,439,374
Balance (in shares) at Jun. 30, 2019	856,039	(263,272)
Balance at Sep. 30, 2019	$ 8,561	$ (28,831,855)	23,165,639	66,414,397	$ 60,756,742
Balance (in shares) at Sep. 30, 2019	856,039	(303,425)			552,614
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(487,776)	$ (487,776)
Compensation expense and issuance of stock in connection with equity-based awards	$ 136		1,085,234		1,085,370
Compensation expense and issuance of stock in connection with equity-based awards (in shares)	13,828
Repurchase of common stock		$ (100,524)			(100,524)
Repurchase of common stock (in shares)		(1,564)
Net income				2,730,754	2,730,754
Balance at Jun. 30, 2020	$ 8,697	$ (28,932,379)	24,250,873	68,657,375	$ 63,984,566
Balance (in shares) at Jun. 30, 2020	869,867	(304,989)			564,878
Balance at Mar. 31, 2020	$ 8,692	$ (28,863,654)	24,224,145	67,184,900	$ 62,554,083
Balance (in shares) at Mar. 31, 2020	869,367	(303,841)
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(107,091)	(107,091)
Compensation expense and issuance of stock in connection with equity-based awards	$ 5		26,728		26,733
Compensation expense and issuance of stock in connection with equity-based awards (in shares)	500
Repurchase of common stock		$ (68,725)			(68,725)
Repurchase of common stock (in shares)		(1,148)
Net income				1,579,566	1,579,566
Balance at Jun. 30, 2020	$ 8,697	$ (28,932,379)	$ 24,250,873	$ 68,657,375	$ 63,984,566
Balance (in shares) at Jun. 30, 2020	869,867	(304,989)			564,878