Condensed Consolidated Unaudited Statements of Shareholders' Equity - USD ($)	Common Stock	Treasury Stock	Additional Paid in Capital	Retained Earnings	Total
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)
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(380,685)	(380,685)
Compensation expense and issuance of stock in connection with equity-based awards	$ 131		1,058,506		1,058,637
Compensation expense and issuance of stock in connection with equity-based awards (in shares)	13,328
Repurchase of common stock		$ (31,799)			(31,799)
Repurchase of common stock (in shares)		(416)
Net income				1,151,188	1,151,188
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)
Balance at Dec. 31, 2019	$ 8,692	$ (28,840,011)	24,192,954	66,592,637	61,954,272
Balance (in shares) at Dec. 31, 2019	869,367	(303,534)
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(107,056)	(107,056)
Compensation expense and issuance of stock in connection with equity-based awards			31,191		31,191
Repurchase of common stock		$ (23,643)			(23,643)
Repurchase of common stock (in shares)		(307)
Net income				699,319	699,319
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)
Balance at Sep. 30, 2020	$ 8,697	$ (30,861,549)	24,282,058	71,362,334	$ 64,791,540
Balance (in shares) at Sep. 30, 2020	869,867	(332,152)			537,715
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(3,144,130)	$ (3,144,130)
Compensation expense and issuance of stock in connection with equity-based awards	$ 137		635,707		635,844
Compensation expense and issuance of stock in connection with equity-based awards (in shares)	13,722
Repurchase of common stock		$ (5,738)			(5,738)
Repurchase of common stock (in shares)		(68)
Net income				5,506,518	5,506,518
Balance at Mar. 31, 2021	$ 8,834	$ (30,867,287)	24,917,765	73,724,722	$ 67,784,034
Balance (in shares) at Mar. 31, 2021	883,589	(332,220)			551,369
Balance at Dec. 31, 2020	$ 8,834	$ (30,867,287)	25,007,239	71,401,400	$ 65,550,186
Balance (in shares) at Dec. 31, 2020	883,589	(332,220)
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(105,586)	(105,586)
Compensation expense and issuance of stock in connection with equity-based awards			(89,474)		(89,474)
Net income				2,428,908	2,428,908
Balance at Mar. 31, 2021	$ 8,834	$ (30,867,287)	$ 24,917,765	$ 73,724,722	$ 67,784,034
Balance (in shares) at Mar. 31, 2021	883,589	(332,220)			551,369