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Permit and Other Intangible Assets - Schedule of Intangible Assets (Details) (Parenthetical) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |  |
Finite-lived intangible asset, useful life | 10 years | 10 years

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration