Notes Receivable from Financial Advisors (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Jan. 01, 2018 |
Dec. 31, 2017 |
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Allowance for doubtful accounts | $ 1,528 | $ 1,208 | |
| Contract acquisition costs, net | $ 80,726 | $ 61,340 | 0 |
| Minimum | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Loan amortized over forgiveness period | 3 years | ||
| Maximum | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Percentage bearing variable interest rate | 10.00% | ||
| Loan amortized over forgiveness period | 5 years | ||
| Accounting Standards Update 2014-09 | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Contract acquisition costs, net | $ (40,566) |
| X | ||||||||||
- Definition The period for which notes are amortized. No definition available.
|
| 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.
|
| X | ||||||||||
- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date, which accrues interest at a rate subject to change from time to time. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|