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Share-Based Compensation - Restricted Stock, Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of vested awards $ 500 $ 1,000 $ 700
Shares vested (in shares) 40,000 80,000 56,000
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of vested awards $ 1,600 $ 3,300 $ 3,300
Shares vested (in shares) 135,000 221,000 0