CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND NONCONTROLLING INTEREST - USD ($) $ in Thousands	Total	Common Shares	Additional paid-in capital	Accumulated deficit	Accumulated Other Comprehensive Income (Loss)	Non- Controlling Interests
Beginning balance (in shares) at Sep. 30, 2023		25,777,169
Beginning balance at Sep. 30, 2023	$ 268,490	$ 6,406	$ 715,696	$ (453,278)	$ 330	$ (664)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net loss	(15,388)			(15,828)		440
Change in noncontrolling interest	(2,085)		(2,309)			224
Issuance of stock under employee stock plans (in shares)		13,511
Issuance of stock under employee stock plans	1	$ 3	(2)
Stock-based compensation	1,897		1,897
Pension cost amortization	46				46
Foreign currency translation adjustment	1,201				1,201
Ending balance (in shares) at Dec. 31, 2023		25,790,680
Ending balance at Dec. 31, 2023	$ 254,162	$ 6,409	715,282	(469,106)	1,577	$ 0
Beginning balance (in shares) at Sep. 30, 2024	26,015,129	26,015,129
Beginning balance at Sep. 30, 2024	$ 170,504	$ 6,466	724,789	(562,163)	1,412
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net loss	(27,630)			(27,630)
Issuance of common shares (in shares)		6,900,000
Issuance of common shares	27,524	$ 1,725	25,799
Issuance of stock under employee stock plans (in shares)		1,520
Issuance of stock under employee stock plans	1	$ 0	1
Stock-based compensation	1,770		1,770
Pension cost amortization	66				66
Foreign currency translation adjustment	(2,379)				(2,379)
Other (in shares)		801,013
Other	$ (24)	$ 200	(223)	(1)
Ending balance (in shares) at Dec. 31, 2024	33,717,662	33,717,662
Ending balance at Dec. 31, 2024	$ 169,832	$ 8,391	$ 752,136	$ (589,794)	$ (901)