CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 631	$ 16,660	$ 9,890
Foreign currency translation adjustments	4,253	60	(2,743)
Postretirement benefit adjustment, net of tax	(96)	(26)	(25)
Comprehensive income	$ 4,788	$ 16,694	$ 7,122

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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