Restructuring - Summary of Restructuring Expense (Detail) - USD ($) $ in Thousands  | 
12 Months Ended | |||
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Dec. 31, 2021  | 
Dec. 31, 2020  | 
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| Restructuring Cost And Reserve [Line Items] | ||||
| Restructuring Costs | $ 14,380 | $ 10,840 | ||
| Compensation And Benefits [Member] | ||||
| Restructuring Cost And Reserve [Line Items] | ||||
| Restructuring Costs | 9,934 | 10,139 | ||
| Occupancy And Other Costs [Member] | ||||
| Restructuring Cost And Reserve [Line Items] | ||||
| Restructuring Costs | [1] | $ 4,446 | $ 701 | |
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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. No definition available. 
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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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