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Stockholders' Equity (Narrative) (Details) - $ / shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Jun. 30, 2020 | Jun. 30, 2019
Dividends Payable [Line Items] |  |  |
Cash dividends on common stock (in dollars per share) |  | $ 1.00 | $ 2.00
Anti-dilutive options excluded from calculation of EPS |  | 276,712 | 196,039
Subsequent Event [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Dividend payable, amount per share | $ 0.25 |  |
Dividend payable, date to be paid | Oct. 14, 2020 |  |
Dividend payable, date of record | Oct. 05, 2020 |  |
Special Dividend [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Cash dividends on common stock (in dollars per share) |  |  | $ 1.00

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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