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Equity and Redeemable Preferred Stock - Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Class of Stock [Line Items] |  |  |  |
Preferred stock dividends |  | $ 37,231 | $ 0 | $ 0
Series A Mandatory Convertible Preferred Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Dividends per share (in usd per share) | $ 11.80 |  |  |
Preferred stock dividends | $ 27,140 |  |  |
Series B-1 Convertible Preferred Stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Dividends per share (in usd per share) |  | $ 134.55 |  |
Preferred stock dividends |  | $ 9,583 |  |
Deemed dividends ($000) |  | $ 508 |  |

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