CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Non-controlling Interests
Balance, beginning of period (in shares) at Sep. 30, 2017		8,277,160
Balance, beginning of period at Sep. 30, 2017	$ 18,183	$ 4,223	$ 1,350	$ 15,023	$ (1,058)	$ (2,286)	$ 931
Increase (Decrease) in Stockholders' Equity
Distributions to non-controlling interests	(506)						(506)
Net (loss) earnings	(1,034)			(1,017)			(17)
Share-based compensation	1		1
Foreign currency translation adjustments, net of taxes of $0	(6)				(6)
Retirement plans - amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	24				24
Balance, end of period (in shares) at Dec. 31, 2017		8,277,160
Balance, end of period at Dec. 31, 2017	16,662	$ 4,223	1,351	14,006	(1,040)	(2,286)	408
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
Cumulative impact from the adoption of ASU No. 2014-09	20			20
Distributions to non-controlling interests	(107)						(107)
Net (loss) earnings	(4,573)			(4,600)			27
Foreign currency translation adjustments, net of taxes of $0	(413)				(413)
Retirement plans - amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	17				17
Balance, end of period (in shares) at Dec. 31, 2018		8,277,160
Balance, end of period at Dec. 31, 2018	$ 11,183	$ 4,223	$ 1,350	$ 8,673	$ (910)	$ (2,286)	$ 133