Goodwill - Additional Information (Details) |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2017
USD ($)
reporting_unit
|
Dec. 31, 2016
USD ($)
|
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| Goodwill and Intangible Assets Disclosure [Abstract] | ||
| Number of reporting units | reporting_unit | 1 | |
| Goodwill impairment | $ | $ 0 | $ 0 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. No definition available.
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