ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2024
Foreign currency translation:
Beginning accumulated foreign currency translation	$ 313	$ 250	$ 220	$ 220
Change in cumulative translation adjustment before reclassifications	(3)	(22)	90	8
Income taxes	0	0	0	0
Net current period other comprehensive (loss) income	(3)	(22)	90	8
Ending accumulated foreign currency translation	310	228	310	228
Retirement plans:
Beginning accumulated retirement plans benefit income	1,723	1,863	1,723	1,884
Amortization of net actuarial gain	0	(22)	0	(43)
Income taxes	0	0	0	0
Net current period other comprehensive loss	0	(22)	0	(43)
Ending accumulated retirement plans benefit income	1,723	1,841	1,723	1,841
Accumulated other comprehensive income, net of taxes	$ 2,033	$ 2,069	$ 2,033	$ 2,069	$ 1,943