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Summary of Significant Accounting Policies - Long Term Investments (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Other Assets
Long Term Investments
Long Term Investments	$ 4.1	$ 4.1

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- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Details

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