Consolidated Statements of Shareholders' Equity - USD ($)	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Sep. 30, 2018							1,805,053	(424,307)
Balance at Sep. 30, 2018	$ 0	$ 0	$ 0	$ 115,786,000	$ (115,786,000)	$ 0	$ 18,000	$ (4,000)	$ 1,755,000	$ 45,361,000	$ 115,786,000	$ 162,916,000
Net loss							$ 0	$ 0	0	(25,216,000)	0	(25,216,000)
Balance (in shares) at Sep. 30, 2019							1,805,053	(424,307)
Balance at Sep. 30, 2019							$ 18,000	$ (4,000)	1,755,000	135,931,000	0	137,700,000
Net loss							$ 0	$ 0	0	4,041,000	0	4,041,000
Balance (in shares) at Sep. 30, 2020							1,805,053	(424,307)
Balance at Sep. 30, 2020							$ 18,000	$ (4,000)	$ 1,755,000	$ 139,972,000	$ 0	$ 141,741,000