Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands  | 
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2021  | 
Dec. 31, 2020  | 
Sep. 30, 2020  | 
Jun. 30, 2020  | 
Mar. 31, 2020  | 
Dec. 31, 2019  | 
Sep. 30, 2019  | 
Jun. 30, 2019  | 
Mar. 31, 2021  | 
Mar. 31, 2020  | 
Mar. 31, 2019  | 
|
| Income Tax Disclosure [Abstract] | |||||||||||
| Current state and local | $ 204 | $ 182 | $ 0 | ||||||||
| Current non-U.S. | 38 | (55) | (63) | ||||||||
| Total current | 242 | 127 | (63) | ||||||||
| Deferred U.S. federal | (13,185) | (7,928) | 0 | ||||||||
| Deferred state and local | (204) | (2,624) | 0 | ||||||||
| Deferred non-U.S. | 120 | 50 | 532 | ||||||||
| Total deferred | (13,269) | (10,502) | 532 | ||||||||
| Total income tax provision / (benefit) | $ (15,125) | $ 1,061 | $ 661 | $ 376 | $ (10,381) | $ 41 | $ 72 | $ (107) | $ (13,027) | $ (10,375) | $ 469 | 
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- Definition Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- References No definition available. 
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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