Consolidated Condensed Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,993	$ (1,342)
Other comprehensive income:
Foreign currency translation adjustment, net of tax $0 and $0, respectively	287	192
Retirement plan liability adjustment, net of tax $0 and $0, respectively	211	189
Comprehensive income (loss)	$ 3,491	$ (961)