Consolidated Condensed Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 254	$ 2,250	$ 1,756	$ 4,168
Other comprehensive income:
Foreign currency translation adjustment, net of tax $0 and $0 for the three months ended and net of tax $0 and $0 for the nine months ended, respectively	79	113	62	175
Retirement plan liability adjustment, net of tax $0 and $0 for the three months end and net of tax $0 and $0 for the nine month ended, respectively	211	188	634	626
Comprehensive income	$ 544	$ 2,551	$ 2,452	$ 4,969