Summary of Goodwill (Parenthetical) (Detail) $ in Thousands |
Dec. 31, 2018
USD ($)
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| U.S. Operating Segment | |
| Goodwill [Line Items] | |
| Accumulated impairment losses | $ 214,031 |
| International Operating Segment | |
| Goodwill [Line Items] | |
| Accumulated impairment losses | $ 27,622 |
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- Definition Amount of accumulated impairment loss for an asset representing 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/disclosureRef
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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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