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Fair Value Measurements - Losses Recognized on Assets Measured on a Nonrecurring Basis (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Nonrecurring Measurements    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total losses on assets measured on a non-recurring basis $ (44) $ (1,009)