Off-Balance-Sheet Risk and Concentration of Credit Risk (Detail) - USD ($) $ in Thousands |
Dec. 31, 2018 |
Jan. 01, 2018 |
Dec. 31, 2017 |
---|---|---|---|
Off-Balance-Sheet Risk and Concentration of Credit Risk [Abstract] | |||
Receivables from clearing brokers | $ 24,068 | $ 48,543 | $ 48,543 |
X | ||||||||||
- Definition Off-Balance-Sheet Risk and Concentration of Credit Risk [Abstract] No definition available.
|
X | ||||||||||
- Definition Amount of right to receive cash and securities on deposit with clearing organizations. Clearing organizations perform post trade processing and trade comparisons among numerous broker-dealers and act as settlement agents between buying and selling broker-dealers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|