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Selected Balance Sheet Data - Components of Deferred Compensation and Commissions (Detail) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
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Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |
Stock appreciation rights ("SARs") liability | $ 1,895 | $ 1,810
Deferred compensation liability | 1,437 | 1,288
Deferred compensation and commissions, current | 32,450 | 47,910
Stock appreciation rights ("SARs") liability | 18,082 | 19,299
Deferred compensation liability | 6,755 | 6,605
Deferred compensation and commissions, non-current | 41,695 | 49,887
Current [Member] |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |
Commissions payable to investment sales and financing professionals | 29,118 | 44,812
Non-Current [Member] |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |
Commissions payable to investment sales and financing professionals | $ 16,858 | $ 23,983

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- Definition Aggregate carrying value as of the balance sheet date of the current liabilities for deferred compensation arrangements related to Rabbi Trust, deferred commissions payable and other commissions related obligations and SARs Liability. + References No definition available. + Details
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- 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. + References No definition available. + Details
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- 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. + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(a)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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