Property and Equipment - Impairment Charges (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Property, Plant and Equipment [Abstract] | |||
| Property and equipment impairment charges | $ 27,414 | $ 4,894 | $ 8,063 |
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- References No definition available.
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- Definition The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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