Receivable From and Payable to Brokers, Dealers and Clearing Organizations (Tables)

12 Months Ended

Dec. 31, 2017

Brokers and Dealers [Abstract]

Receivable from and Payable to Brokers, Dealers and Clearing Organizations

(Expressed in thousands)
	As of December 31,
	2017		2016
Receivable from brokers, dealers and clearing organizations consists of:
Securities borrowed	$	132,368	$	154,090
Receivable from brokers	19,298		25,768
Securities failed to deliver	9,442		6,172
Clearing organizations	24,361		26,081
Other	1,646		2,823
Total	$	187,115	$	214,934
Payable to brokers, dealers and clearing organizations consists of:
Securities loaned	$	180,270	$	179,875
Payable to brokers	1,567		610
Securities failed to receive	17,559		11,523
Other	12,087		29,381
Total	$	211,483	$	221,389