Information Regarding Controlling Stockholder Narrative (Details) - Chairman of the Board of Directors and Chief Executive Officer [Member]	Dec. 31, 2015
Common Class A [Member]
Related Party Transaction [Line Items]
Ownership in the company	99.00%
Common Class B [Member]
Related Party Transaction [Line Items]
Ownership in the company	33.70%

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.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration