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Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Sep. 30, 2022
Accumulated Other Comprehensive Loss.    
Cumulative effect of foreign currency translation, net $ (4,783) $ (5,791)
Cumulative unrealized loss on pension liability (1,537) (1,537)
Accumulated other comprehensive loss, net $ (6,320) $ (7,328)