CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid-In Capital	(Accumulated Deficit) Retained Earnings	Treasury Stock	Total
Balance at Sep. 30, 2019	$ 19,006	$ 51,987,096	$ 5,570,587	$ (21,368,537)	$ 36,208,152
Increase (Decrease) in Stockholders' Equity
Net income			327,908		327,908
Balance at Dec. 31, 2019	19,006	51,987,096	5,898,495	(21,368,537)	36,536,060
Balance at Sep. 30, 2019	19,006	51,987,096	5,570,587	(21,368,537)	36,208,152
Increase (Decrease) in Stockholders' Equity
Dividends declared					0
Net income					766,013
Balance at Mar. 31, 2020	19,081	52,155,835	6,336,600	(21,368,537)	37,142,979
Balance at Dec. 31, 2019	19,006	51,987,096	5,898,495	(21,368,537)	36,536,060
Increase (Decrease) in Stockholders' Equity
Exercise of stock options	2	8,820			8,822
Issuance of stock to directors	73	159,919			159,992
Dividends declared					0
Net income			438,105		438,105
Balance at Mar. 31, 2020	19,081	52,155,835	6,336,600	(21,368,537)	37,142,979
Balance at Sep. 30, 2020	19,311	51,458,787	(2,340,530)	(21,368,537)	27,769,031
Increase (Decrease) in Stockholders' Equity
Share-based compensation		45,591			45,591
Dividends declared			(8,607,192)		(8,607,192)
Net income			240,145		240,145
Balance at Dec. 31, 2020	19,311	51,504,378	(10,707,577)	(21,368,537)	19,447,575
Balance at Sep. 30, 2020	19,311	51,458,787	(2,340,530)	(21,368,537)	27,769,031
Increase (Decrease) in Stockholders' Equity
Net income					848,722
Balance at Mar. 31, 2021	19,338	51,708,925	(10,099,000)	(21,368,537)	20,260,726
Balance at Dec. 31, 2020	19,311	51,504,378	(10,707,577)	(21,368,537)	19,447,575
Increase (Decrease) in Stockholders' Equity
Share-based compensation		44,594			44,594
Issuance of stock to directors	27	159,953			159,980
Net income			608,577		608,577
Balance at Mar. 31, 2021	$ 19,338	$ 51,708,925	$ (10,099,000)	$ (21,368,537)	$ 20,260,726