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Stock Based Compensation Details (Details) | Dec. 31, 2017 shares
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Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Maximum​Number​OfShares​Available​ToBe​Granted​Under​Award​Stock​Plan | 14,400,000

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- Definition Maximum​Number​OfShares​Available​ToBe​Granted​Under​Award​Stock​Plan + References No definition available. + Details
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Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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