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Summary Of Significant Accounting Policies (Narrative) (Details) | 3 Months Ended
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Sep. 30, 2018
Minimum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Deferred revenue recognized over a period of | 1 year
Maximum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Deferred revenue recognized over a period of | 5 years

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