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Preferred Stock - Schedule of Series A Preferred Stock (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Oct. 02, 2017
Class of Stock [Line Items] |  |  |
Shares Authorized (in shares) | 500,000 | 500,000 |
Stated Value per Share (in US$ per share) | $ 1.00 | $ 1.00 |
Carrying Value | $ 15,000 | $ 15,000 |
Liquidation Preference | $ 16,752,000 | $ 16,178,000 |
Preferred Stock, outstanding (in shares) | 14,700 | 14,700 |
Series A Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Shares Authorized (in shares) | 21,000 |  |
Stated Value per Share (in US$ per share) | $ 1,140 |  | $ 1,000
Carrying Value | $ 16,752,000 |  |
Cumulative Preferred Dividends, Undeclared and Unpaid | 2,052,150 |  |
Liquidation Preference | $ 16,752,000 |  |
Preferred Stock, outstanding (in shares) | 14,700 |  |

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