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Supplemental Financial Information - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss)    
Cumulative foreign currency translation adjustment $ 4,049 $ 752
Defined benefit pension obligation (1,231) (1,236)
Accumulated other comprehensive income (loss) $ 2,818 $ (484)