Selected Balance Sheet Data - Components of Deferred Compensation and Commissions (Detail) - USD ($) $ in Thousands |
Mar. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Deferred Compensation and Commissions [Line Items] | ||
| Stock appreciation rights ("SARs") liability, current | $ 2,225 | $ 2,162 |
| Commissions payable to investment sales and financing professionals, current | 29,054 | 54,082 |
| Deferred compensation liability, current | 1,485 | 1,519 |
| Other, current | 435 | 343 |
| Deferred compensation and commissions, current | 33,199 | 58,106 |
| Stock appreciation rights ("SARs") liability, non-current | 14,568 | 16,671 |
| Commissions payable to investment sales and financing professionals, non-current | 7,389 | 15,306 |
| Deferred compensation liability, non-current | 6,788 | 6,768 |
| Other, non-current | 0 | 0 |
| Deferred compensation and commissions, non-current | $ 28,745 | $ 38,745 |
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. No definition available.
|
| X | ||||||||||
- Definition Aggregate carrying value as of the balance sheet date of the non-current liabilities for deferred compensation arrangements related to Rabbi Trust, deferred commissions payable and other commissions related obligations and SARs Liability. No definition available.
|
| X | ||||||||||
- Definition Deferred Compensation and Commissions. No definition available.
|
| X | ||||||||||
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements related to Rabbi Trust, deferred commissions payable and other commissions related obligations and SARs Liability. No definition available.
|
| X | ||||||||||
- Definition Aggregate carrying value (includes principal and accrued interest) as of the balance sheet date of current deferred compensation associated with Stock Appreciation Rights payable to each participant in installments upon retirement or departure under terms of the agreement. No definition available.
|
| X | ||||||||||
- Definition Aggregate carrying value (includes principal and accrued interest) as of the balance sheet date of non-current deferred compensation associated with Stock Appreciation Rights payable to each participant in installments upon retirement or departure under terms of the agreement. No definition available.
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements payable within one year (or the normal operating cycle, if longer). Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements payable after one year (or the normal operating cycle, if longer). Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date. No definition available.
|
| X | ||||||||||
- Definition Amount of the liabilities, classified as other, for deferred compensation arrangements payable after one year or the operating cycle, if longer. No definition available.
|
| X | ||||||||||
- Definition Amount of the liabilities, classified as other, for deferred compensation arrangements payable within one year or the operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|