CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (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
Distributions to non-controlling interests	(54)						(54)
Net earnings (loss)	2,202			1,641			561
Share-based compensation	2		2
Foreign currency translation adjustments, net of taxes of $0	(70)				(70)
Retirement plans - amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	97				97
Balance, end of period (in shares) at Dec. 31, 2016		8,277,160
Balance, end of period at Dec. 31, 2016	15,921	$ 4,223	1,347	15,493	(3,893)	(2,286)	1,037
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 earnings (loss)	(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