CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - 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, 2016		8,277,160
Balance, beginning of period at Sep. 30, 2016	$ 13,744	$ 4,223	$ 1,345	$ 13,852	$ (3,920)	$ (2,286)	$ 530
Increase (Decrease) in Stockholders' Equity
Contributions from non-controlling interests	6						6
Distributions to non-controlling interests	(617)						(617)
Net (loss) earnings	1,046			514			532
Share-based compensation	4		4
Foreign currency translation adjustments, net of taxes of $0	33				33
Retirement plans - amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	244				244
Balance, end of period (in shares) at Jun. 30, 2017		8,277,160
Balance, end of period at Jun. 30, 2017	14,460	$ 4,223	1,349	14,366	(3,643)	(2,286)	451
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	(594)						(594)
Net (loss) earnings	(465)			(712)			247
Share-based compensation	1		1
Foreign currency translation adjustments, net of taxes of $0	(263)				(263)
Retirement plans - amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	93				93
Balance, end of period (in shares) at Jun. 30, 2018		8,277,160
Balance, end of period at Jun. 30, 2018	$ 16,955	$ 4,223	$ 1,351	$ 14,311	$ (1,228)	$ (2,286)	$ 584