Legal Proceedings (Details)	12 Months Ended
Dec. 31, 2016 item
Barbara Rohr of Faruqi & Faruqi
Legal proceedings
Number of lawsuits	0
Tim Howard Of Howard & Associates
Legal proceedings
Number of lawsuits	0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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