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Fair Value Measurements - Additional Information (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Mar. 31, 2021
Jun. 30, 2020
Fair Value Measurements    
Fair value assets, transfer from level 1 to level 2 $ 0 $ 0
Fair value assets, transfer from level 2 to level 1 0 0
Fair value liabilities, transfer from level 1 to level 2 0 0
Fair value liabilities, transfer from level 2 to level 1 0 0
Fair value assets, transfer to and from level 3 0 0
Fair value liabilities, transfer to and from level 3 $ 0 $ 0