Condensed Consolidated Unaudited Statements of Shareholders' Equity - USD ($)	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Total
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)
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(3,144,130)	(3,144,130)
Compensation expense and settlement of equity-based awards	$ 137		635,707		635,844
Compensation expense and settlement of 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)
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 settlement of 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)
Balance at Sep. 30, 2021	$ 8,834	$ (30,867,287)	24,918,781	83,552,298	$ 77,612,626
Balance (in shares) at Sep. 30, 2021	883,589	(332,220)			551,369
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(3,223,011)	$ (3,223,011)
Compensation expense and settlement of equity-based awards	$ 334		1,636,265		1,636,599
Compensation expense and settlement of equity-based awards (in shares)	33,420
Net income				6,007,238	6,007,238
Balance at Mar. 31, 2022	$ 9,168	$ (30,867,287)	26,555,046	86,336,525	$ 82,033,452
Balance (in shares) at Mar. 31, 2022	917,009	(332,220)			584,789
Balance at Dec. 31, 2021	$ 9,148	$ (30,867,287)	26,999,735	83,438,578	$ 79,580,174
Balance (in shares) at Dec. 31, 2021	915,009	(332,220)
Increase (Decrease) in Stockholders' Equity
Dividends on common stock				(108,235)	(108,235)
Compensation expense and settlement of equity-based awards	$ 20		(444,689)		(444,669)
Compensation expense and settlement of equity-based awards (in shares)	2,000
Net income				3,006,182	3,006,182
Balance at Mar. 31, 2022	$ 9,168	$ (30,867,287)	$ 26,555,046	$ 86,336,525	$ 82,033,452
Balance (in shares) at Mar. 31, 2022	917,009	(332,220)			584,789