CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (DEFICIT) (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Loss	Treasury Stock	Non-controlling Interests
Balance, beginning of period (in shares) at Sep. 30, 2018		8,277,160
Balance, beginning of period at Sep. 30, 2018	$ 16,239	$ 4,223	$ 1,350	$ 13,253	$ (514)	$ (2,286)	$ 213
Increase (Decrease) in Stockholders' Equity (Deficit)
Cumulative impact from the adoption of ASU No. 2014-09	20			20
Distributions to non-controlling interests	(110)						(110)
Net loss	(8,122)			(8,090)			(32)
Foreign currency translation adjustments, net of taxes of $0	(194)				(194)
Retirement plans:
Amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	42				42
Net actuarial gains arising during the period, net of taxes of $0	0
Curtailment gain, net of taxes of $0	0
Balance, end of period (in shares) at Jun. 30, 2019		8,277,160
Balance, end of period at Jun. 30, 2019	7,875	$ 4,223	1,350	5,183	(666)	(2,286)	71
Balance, beginning of period (in shares) at Sep. 30, 2019		8,277,160
Balance, beginning of period at Sep. 30, 2019	1,329	$ 4,223	1,350	859	(2,917)	(2,286)	100
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss	(5,404)			(5,384)			(20)
Foreign currency translation adjustments, net of taxes of $0	(36)				(36)
Retirement plans:
Amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	100				100
Net actuarial gains arising during the period, net of taxes of $0	880				880
Curtailment gain, net of taxes of $0	1,699				1,699
Balance, end of period (in shares) at Jun. 30, 2020		8,277,160
Balance, end of period at Jun. 30, 2020	$ (1,432)	$ 4,223	$ 1,350	$ (4,525)	$ (274)	$ (2,286)	$ 80