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Restructuring Charges (Separation and Restructuring Plan Activity) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Restructuring and Related Activities [Abstract]    
Liability beginning balance   $ 1,435
Increase in liability (separation and other charges) $ 2,814 490
Reduction in liability (payments and adjustments)   $ (1,925)
Liability ending balance $ 2,814