Summary of Significant Accounting Policies - Other Intangible Assets (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | 12 Months Ended |
|---|---|---|---|
Dec. 31, 2017 |
Jun. 30, 2018 |
Dec. 31, 2017 |
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| Indefinite-lived Intangible Assets [Line Items] | |||
| Discount rates | 25.00% | ||
| Customer attrition rates | 20.00% | ||
| Intangible asset impairment charges | $ 1.1 | ||
| Minimum | |||
| Indefinite-lived Intangible Assets [Line Items] | |||
| Discount rates | 17.00% | ||
| Customer attrition rates | 15.00% | ||
| Maximum | |||
| Indefinite-lived Intangible Assets [Line Items] | |||
| Discount rates | 25.00% | ||
| Customer attrition rates | 78.00% |
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- Definition Fair Value Inputs, Customer Attrition Rates No definition available.
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- Definition Fair Value Inputs, Rate Of Return No definition available.
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. No definition available.
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