CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Loss	Treasury Stock	Non-controlling Interests
Balance at Sep. 30, 2018	$ 16,239	$ 4,223	$ 1,350	$ 13,253	$ (514)	$ (2,286)	$ 213
Balance (in shares) at Sep. 30, 2018		8,277,160
Increase (Decrease) in Stockholders' Equity
Cumulative impact from the adoption of ASU No. 2014-09	20			20
Distributions to non-controlling interests	(110)						(110)
Net (loss) earnings	(12,417)			(12,414)			(3)
Foreign currency translation adjustments, net of taxes of $0	(234)				(234)
Retirement plans:
Amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	55				55
Net actuarial loss arising during the period, net of taxes of $0	(2,224)				(2,224)
Curtailment gain, net of taxes of $0	0
Balance at Sep. 30, 2019	1,329	$ 4,223	1,350	859	(2,917)	(2,286)	100
Balance (in shares) at Sep. 30, 2019		8,277,160
Increase (Decrease) in Stockholders' Equity
Distributions to non-controlling interests	(87)						(87)
Net (loss) earnings	(4,677)			(4,756)			79
Foreign currency translation adjustments, net of taxes of $0	(146)				(146)
Retirement plans:
Amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	120				120
Net actuarial loss arising during the period, net of taxes of $0	(218)				(218)
Curtailment gain, net of taxes of $0	1,726				1,726
Balance at Sep. 30, 2020	$ (1,953)	$ 4,223	$ 1,350	$ (3,897)	$ (1,435)	$ (2,286)	$ 92
Balance (in shares) at Sep. 30, 2020		8,277,160