ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Foreign currency translation:
Balance at beginning of period	$ 222	$ 262
Change in cumulative translation adjustment before reclassifications	(2)	(40)
Foreign currency translation adjustments, taxes	0	0
Net current period other comprehensive loss	(2)	(40)
Balance at end of the period	220	222
Retirement plans:
Balance at beginning of period	1,072	(230)
Amortization of net actuarial gain	(79)	0
Net actuarial gain arising during the period	891	1,302
Amortization of accumulated other comprehensive loss into net periodic benefit costs, taxes	0	0
Net current period other comprehensive income	812	1,302
Balance at end of the period	1,884	1,072
Accumulated other comprehensive income, net	$ 2,104	$ 1,294