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Preferred Stock - Narrative (Details) |  | 12 Months Ended |
--- | --- | --- | ---
Oct. 02, 2017 day $ / shares shares | Jun. 30, 2018 USD ($) $ / shares shares | Jun. 30, 2017 $ / shares shares
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized (in shares) |  | 500,000 | 500,000
Preferred stock, par value (in US$ per share) | $ / shares |  | $ 1 | $ 1
Series A Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized (in shares) |  | 21,000 |
Preferred stock, par value (in US$ per share) | $ / shares | $ 1,000 | $ 1,026 |
Conversion price (in US$ per share) | $ / shares | $ 38.32 |  |
Undeclared and unpaid preferred dividends | $ |  | $ 389,261 |
Preferred stock, issued (in shares) | 14,700 | 14,700 |
Dividend rate | 3.50% |  |
Number of trading days | day | 20 |  |
Number of consecutive trading days | day | 30 |  |
Number of shares the holder may convert beginning October 2, 2018 | 4,200 |  |
Number of shares the holder may convert beginning October 2, 2019 | 6,300 |  |
Number of shares the holder may convert beginning October 2, 2020 | 10,500 |  |

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- Definition Preferred Stock, Maximum Number Of Shares That Each Holder May Convert After Year One + References No definition available. + Details
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- Definition Preferred Stock, Maximum Number Of Shares That Each Holder May Convert After Year Three + References No definition available. + Details
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- Definition Preferred Stock, Maximum Number Of Shares That Each Holder May Convert After Year Two + References No definition available. + Details
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- Definition Aggregate amount of cumulative preferred dividends in arrears. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21488-112644 + Details
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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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