Quarterly report pursuant to Section 13 or 15(d)

Selected Balance Sheet Data - Components of Deferred Compensation and Commissions (Detail)

v3.5.0.2
Selected Balance Sheet Data - Components of Deferred Compensation and Commissions (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]    
SARs liability $ 1,366 $ 0
Commissions payable to investment sales and financing professionals 28,140 34,091
Deferred compensation liability 138 0
Total 29,644 34,091
SARs liability 20,719 21,399
Commissions payable to investment sales and financing professionals 12,755 17,015
Deferred compensation liability 6,804 5,264
Total $ 40,278 $ 43,678