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Stockholders' Equity - Dividends (Details) - $ / shares | 12 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Dividends Paid 1 |  |  |
Dividends Payable [Line Items] |  |  |
Cash dividends paid (per common share) | $ 0.10 | $ 0.07 | $ 0.05
Dividends Paid 2 |  |  |
Dividends Payable [Line Items] |  |  |
Cash dividends paid (per common share) | 0.10 | 0.07 | 0.05
Dividends Paid 3 |  |  |
Dividends Payable [Line Items] |  |  |
Cash dividends paid (per common share) | 0.075 | 0.065 | 0.05
Dividends Paid 4 |  |  |
Dividends Payable [Line Items] |  |  |
Cash dividends paid (per common share) | $ 0.075 | $ 0.05 | $ 0.05

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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=27012166&loc=d3e187085-122770 + Details
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