CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Total
Balance at Sep. 30, 2018	$ 18,937	$ 51,783,779	$ 3,720,291	$ (21,368,537)	$ 34,154,470
Increase (Decrease) in Stockholders' Equity
Net income			139,421		139,421
Balance at Dec. 31, 2018	18,937	51,783,779	3,859,712	(21,368,537)	34,293,891
Balance at Sep. 30, 2018	18,937	51,783,779	3,720,291	(21,368,537)	34,154,470
Increase (Decrease) in Stockholders' Equity
Net income					853,179
Balance at Jun. 30, 2019	19,006	51,987,096	4,573,470	(21,368,537)	35,211,035
Balance at Dec. 31, 2018	18,937	51,783,779	3,859,712	(21,368,537)	34,293,891
Increase (Decrease) in Stockholders' Equity
Issuance of stock to directors	69	203,317			203,386
Net income			202,499		202,499
Balance at Mar. 31, 2019	19,006	51,987,096	4,062,211	(21,368,537)	34,699,776
Increase (Decrease) in Stockholders' Equity
Net income			511,259		511,259
Balance at Jun. 30, 2019	19,006	51,987,096	4,573,470	(21,368,537)	35,211,035
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
Net income					2,025,871
Balance at Jun. 30, 2020	19,081	52,155,835	7,596,458	(21,368,537)	38,402,837
Balance at Dec. 31, 2019	19,006	51,987,096	5,898,495	(21,368,537)	36,536,060
Increase (Decrease) in Stockholders' Equity
Issuance of stock to directors	73	159,919			159,992
Exercise of stock options	2	8,820			8,822
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
Increase (Decrease) in Stockholders' Equity
Net income			1,259,858		1,259,858
Balance at Jun. 30, 2020	$ 19,081	$ 52,155,835	$ 7,596,458	$ (21,368,537)	$ 38,402,837