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Stockholders' Equity - Treasury Shares (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020
Equity, Class of Treasury Stock [Line Items] |  |
Number of treasury shares acquired (in shares) | 2,632 | 449,921
Average Price per Share (in USD per share) | $ 2.79 | $ 5.52
Treasury Stock Purchases | $ 7,347 | $ 2,483,357
Shares surrendered for tax withholding upon vesting |  |
Equity, Class of Treasury Stock [Line Items] |  |
Number of treasury shares acquired (in shares) | 2,632 | 9,255
Average Price per Share (in USD per share) | $ 2.79 | $ 5.90
Treasury Stock Purchases | $ 7,347 | $ 54,565
2015 Share Repurchase Program |  |
Equity, Class of Treasury Stock [Line Items] |  |
Number of treasury shares acquired (in shares) | 0 | 440,666
Average Price per Share (in USD per share) | $ 0 | $ 5.51
Treasury Stock Purchases | $ 0 | $ 2,428,792

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