CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock	Non-controlling Interests
Balance, beginning of period (in shares) at Sep. 30, 2022		9,956,687
Balance, beginning of period at Sep. 30, 2022	$ 19,161	$ 5,062	$ 7,351	$ 7,720	$ 1,294	$ (2,286)	$ 20
Increase (Decrease) in Stockholders' Equity
Net (loss) earnings	(26)			(148)			122
Foreign currency translation adjustments, net of taxes of $0	2				2
Distributions to non-controlling interests	(124)						(124)
Share-based compensation	190		190
Dividends declared, cash paid per share	(299)			(299)
Retirement plans:
Amortization of accumulated other comprehensive gain into net periodic benefit cost, net of taxes of $0	(40)				(40)
Balance, end of period (in shares) at Mar. 31, 2023		9,956,687
Balance, end of period at Mar. 31, 2023	18,864	$ 5,062	7,541	7,273	1,256	(2,286)	18
Balance, beginning of period (in shares) at Dec. 31, 2022		9,956,687
Balance, beginning of period at Dec. 31, 2022	20,210	$ 5,062	7,466	8,660	1,276	(2,286)	32
Increase (Decrease) in Stockholders' Equity
Net (loss) earnings	(1,235)			(1,237)			2
Foreign currency translation adjustments, net of taxes of $0	0
Distributions to non-controlling interests	(16)						(16)
Share-based compensation	75		75
Dividends declared, cash paid per share	(150)			(150)
Retirement plans:
Amortization of accumulated other comprehensive gain into net periodic benefit cost, net of taxes of $0	(20)				(20)
Balance, end of period (in shares) at Mar. 31, 2023		9,956,687
Balance, end of period at Mar. 31, 2023	18,864	$ 5,062	7,541	7,273	1,256	(2,286)	18
Balance, beginning of period (in shares) at Sep. 30, 2023		9,990,778
Balance, beginning of period at Sep. 30, 2023	18,757	$ 5,079	7,687	6,160	2,104	(2,286)	13
Increase (Decrease) in Stockholders' Equity
Net (loss) earnings	(2,212)			(2,436)			224
Foreign currency translation adjustments, net of taxes of $0	8				8
Distributions to non-controlling interests	(223)						(223)
Share-based compensation	111		111
Issuance of common stock for restricted stock units vested (in shares)		37,312
Issuance of common stock for restricted stock units vested	0	$ 19	(19)
Retirement plans:
Amortization of accumulated other comprehensive gain into net periodic benefit cost, net of taxes of $0	(43)				(43)
Balance, end of period (in shares) at Mar. 31, 2024		10,028,090
Balance, end of period at Mar. 31, 2024	16,398	$ 5,098	7,779	3,724	2,069	(2,286)	14
Balance, beginning of period (in shares) at Dec. 31, 2023		10,000,106
Balance, beginning of period at Dec. 31, 2023	18,165	$ 5,084	7,747	5,496	2,113	(2,286)	11
Increase (Decrease) in Stockholders' Equity
Net (loss) earnings	(1,550)			(1,772)			222
Foreign currency translation adjustments, net of taxes of $0	(22)				(22)
Distributions to non-controlling interests	(219)						(219)
Share-based compensation	46		46
Issuance of common stock for restricted stock units vested (in shares)		27,984
Issuance of common stock for restricted stock units vested	0	$ 14	(14)
Retirement plans:
Amortization of accumulated other comprehensive gain into net periodic benefit cost, net of taxes of $0	(22)				(22)
Balance, end of period (in shares) at Mar. 31, 2024		10,028,090
Balance, end of period at Mar. 31, 2024	$ 16,398	$ 5,098	$ 7,779	$ 3,724	$ 2,069	$ (2,286)	$ 14