CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Total
Balance at Sep. 30, 2015	$ 18,756	$ 51,148,722	$ 818,768	$ (20,643,760)	$ 31,342,486
Increase (Decrease) in Stockholders' Equity
Share-based compensation		60,272			60,272
Issuance of stock to directors	57	183,165			183,222
Purchase of treasury stock				(724,777)	(724,777)
Net income (loss)			1,986,801		1,986,801
Balance at Sep. 30, 2016	18,813	51,392,159	2,805,569	(21,368,537)	32,848,004
Increase (Decrease) in Stockholders' Equity
Issuance of stock to directors	67	191,682			191,749
Net income (loss)			4,568,627		4,568,627
Balance at Sep. 30, 2017	18,880	51,583,841	7,374,196	(21,368,537)	37,608,380
Increase (Decrease) in Stockholders' Equity
Issuance of stock to directors	57	199,938			199,995
Net income (loss)			(3,653,905)		(3,653,905)
Balance at Sep. 30, 2018	$ 18,937	$ 51,783,779	$ 3,720,291	$ (21,368,537)	$ 34,154,470