Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details)
6 Months Ended
Dec. 31, 2017
USD ($)
Summary of Significant Accounting Policies [Line Items]  
Balance as of June 30, 2017 $ (588)
Total unrealized gains (losses):  
Included in earnings 498
Balance as of December 31, 2017 $ (90)