Settlement Agreement (Detail) $ in Thousands |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|---|
|
Jan. 31, 2019
USD ($)
|
Mar. 31, 2019
USD ($)
|
Mar. 31, 2018
USD ($)
|
Mar. 31, 2019
USD ($)
|
Mar. 31, 2018
USD ($)
|
Sep. 30, 2018
USD ($)
|
Apr. 19, 2018
USD ($)
installment
|
|
| Loss Contingencies [Line Items] | |||||||
| Settlement income | $ 0 | $ 14,803 | $ 0 | $ 14,803 | |||
| Other current assets | 17,124 | 17,124 | $ 14,137 | ||||
| Other assets | 6,151 | 6,151 | $ 10,270 | ||||
| Settlement Agreement | |||||||
| Loss Contingencies [Line Items] | |||||||
| Aggregate net payments to be received | $ 15,700 | ||||||
| Number of equal installments payable | installment | 4 | ||||||
| Settlement income | $ 14,800 | ||||||
| Installment payments received | $ 3,900 | ||||||
| Other current assets | 7,900 | 7,900 | |||||
| Other assets | $ 3,600 | $ 3,600 | |||||
| X | ||||||||||
- Definition Loss Contingency, Number Of Installments No definition available.
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| X | ||||||||||
- Definition Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of cash inflow from the collection of receivables related to a loss contingency. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of noncurrent assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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