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Contingencies - Additional Information (Detail) $ in Millions | 3 Months Ended | 5 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 USD ($) Claim | Jul. 31, 2018 Claim | Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items] |  |  |
Number of arbitration claims filed |  | 315 |
Number of expected individual arbitrations sent back to state court | 60 |  |
Other Accrued Expenses [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Accrual for legal fees and settlements | $ | $ 1.7 |  | $ 6.1

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- Definition Number of expected individual arbitrations sent back to state court. + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
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- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 + Details
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