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Segment and Geographic Information Revenues as a Percent of Total Revenues by Geographic Region (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 01, 2017 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2016
Successor |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 100.00% | 100.00% |
Successor | U.S. |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 48.90% | 47.80% |
Successor | Japan |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 11.70% | 10.10% |
Successor | Taiwan |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 8.70% | 8.10% |
Successor | Australia |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 5.30% | 6.60% |
Successor | India |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 6.70% | 6.20% |
Successor | China |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 7.50% | 5.90% |
Successor | South Korea |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 1.10% | 3.10% |
Successor | Other |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage |  | 10.10% | 12.20% |
Predecessor |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 100.00% |  |  | 100.00%
Predecessor | U.S. |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 55.20% |  |  | 54.70%
Predecessor | Japan |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 11.40% |  |  | 6.90%
Predecessor | Taiwan |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 5.70% |  |  | 4.60%
Predecessor | Australia |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 4.20% |  |  | 4.20%
Predecessor | India |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 2.70% |  |  | 3.00%
Predecessor | China |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 5.60% |  |  | 5.40%
Predecessor | South Korea |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 0.50% |  |  | 1.50%
Predecessor | Other |  |  |  |
Revenues as a Percent of Total Revenues by Geographic Region [Line Items] |  |  |  |
Segment Reporting, Revenue Percentage | 14.70% |  |  | 19.70%

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