Goodwill - Summary of Changes in Carrying Amount of Goodwill (Detail) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2017 |
Sep. 30, 2017 |
Jul. 01, 2017 |
Apr. 01, 2017 |
Dec. 31, 2016 |
Oct. 01, 2016 |
Jul. 02, 2016 |
Apr. 02, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Goodwill | |||||||||||||
| Balance at Beginning of the Year | $ 115,207,000 | $ 115,369,000 | $ 115,207,000 | $ 115,369,000 | |||||||||
| Acquisition | 25,740,000 | 0 | |||||||||||
| Impairment Charge | $ (16,237,000) | $ 0 | $ 0 | 0 | $ 0 | $ 0 | $ 0 | 0 | (16,237,000) | 0 | $ 0 | ||
| Foreign Currency Translations and Other | 935,000 | (162,000) | |||||||||||
| Balance at End of the Year | 125,645,000 | 115,207,000 | 125,645,000 | 115,207,000 | 115,369,000 | ||||||||
| Goodwill - Gross | $ 158,424,000 | $ 131,749,000 | |||||||||||
| Accumulated Impairment Losses | (32,779,000) | (16,542,000) | |||||||||||
| Goodwill | $ 125,645,000 | $ 115,207,000 | $ 115,207,000 | $ 115,369,000 | $ 115,207,000 | $ 115,369,000 | $ 115,369,000 | $ 125,645,000 | $ 115,207,000 | ||||
| X | ||||||||||
- Definition Amount after accumulated impairment loss of 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/presentationRef
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| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits 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
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| X | ||||||||||
- Definition Amount before accumulated impairment loss of 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/presentationRef
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| X | ||||||||||
- 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/presentationRef
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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
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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