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Legal Matters - Additional Information (Detail) $ in Millions |  | 1 Months Ended
--- | --- | ---
Aug. 05, 2015 Plaintiff Employee | Sep. 30, 2020 USD ($)
Robles Lawsuits [Member] |  |
Loss Contingencies [Line Items] |  |
Number of plaintiffs against HGT | Plaintiff | 63 |
Number of employees filed lawsuit | Employee | 5 |
Robles and Adame Lawsuits | Accrued Other [Member] |  |
Loss Contingencies [Line Items] |  |
Claims settlement recorded in consolidated balance sheet |  | $ 4.8
Robles and Adame Lawsuits | General and Administrative Expense |  |
Loss Contingencies [Line Items] |  |
Claims settlement recorded in consolidated statement of income and comprehensive income |  | $ 4.8

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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=121557415&loc=d3e14435-108349 + Details
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