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) Income	Treasury Stock	Non-controlling Interests
Balance, beginning of period (in shares) at Sep. 30, 2020		8,277,160
Balance, beginning of period at Sep. 30, 2020	$ (1,953)	$ 4,223	$ 1,350	$ (3,897)	$ (1,435)	$ (2,286)	$ 92
Increase (Decrease) in Stockholders' Equity (Deficit)
Net earnings	5,503			4,706			797
Foreign currency translation adjustments, net of taxes of $0	(393)				(393)
Distributions to non-controlling interests	(951)						(951)
Share-based compensation	389		389
Issuance of common stock, net of costs (in shares)		586,546
Issuance of common stock, net of costs	1,577	$ 293	1,284
Retirement plans:
Amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	92				92
Gain on termination of post-retirement medical plan, net of taxes of $0	541				541
Balance, end of period (in shares) at Jun. 30, 2021		8,863,706
Balance, end of period at Jun. 30, 2021	4,805	$ 4,516	3,023	809	(1,195)	(2,286)	(62)
Balance, beginning of period (in shares) at Mar. 31, 2021		8,277,160
Balance, beginning of period at Mar. 31, 2021	(2,415)	$ 4,223	1,501	(4,169)	(1,688)	(2,286)	4
Increase (Decrease) in Stockholders' Equity (Deficit)
Net earnings	5,554			4,978			576
Foreign currency translation adjustments, net of taxes of $0	(74)				(74)
Distributions to non-controlling interests	(642)						(642)
Share-based compensation	238		238
Issuance of common stock, net of costs (in shares)		586,546
Issuance of common stock, net of costs	1,577	$ 293	1,284
Retirement plans:
Amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	26				26
Gain on termination of post-retirement medical plan, net of taxes of $0	541				541
Balance, end of period (in shares) at Jun. 30, 2021		8,863,706
Balance, end of period at Jun. 30, 2021	4,805	$ 4,516	3,023	809	(1,195)	(2,286)	(62)
Balance, beginning of period (in shares) at Sep. 30, 2021		9,445,625
Balance, beginning of period at Sep. 30, 2021	9,507	$ 4,807	4,590	2,356	32	(2,286)	8
Increase (Decrease) in Stockholders' Equity (Deficit)
Net earnings	6,327			5,656			671
Foreign currency translation adjustments, net of taxes of $0	(121)				(121)
Distributions to non-controlling interests	(629)						(629)
Share-based compensation	541		541
Issuance of common stock for services (in shares)		1,595
Issuance of common stock for services	3	$ 0	3
Issuance of common stock, net of costs (in shares)		509,467
Issuance of common stock, net of costs	2,356	$ 255	2,101
Retirement plans:
Amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	0
Balance, end of period (in shares) at Jun. 30, 2022		9,956,687
Balance, end of period at Jun. 30, 2022	17,984	$ 5,062	7,235	8,012	(89)	(2,286)	50
Balance, beginning of period (in shares) at Mar. 31, 2022		9,956,687
Balance, beginning of period at Mar. 31, 2022	15,461	$ 5,062	7,121	5,481	19	(2,286)	64
Increase (Decrease) in Stockholders' Equity (Deficit)
Net earnings	2,589			2,531			58
Foreign currency translation adjustments, net of taxes of $0	(108)				(108)
Distributions to non-controlling interests	(72)						(72)
Share-based compensation	114		114
Retirement plans:
Amortization of accumulated other comprehensive loss into net periodic benefit cost, net of taxes of $0	0
Balance, end of period (in shares) at Jun. 30, 2022		9,956,687
Balance, end of period at Jun. 30, 2022	$ 17,984	$ 5,062	$ 7,235	$ 8,012	$ (89)	$ (2,286)	$ 50