Receivables from and payables to brokers, dealers and clearing organizations receivables from brokers, dealers, and clearing organization (Tables)

12 Months Ended

Dec. 31, 2017

Receivables from Brokers-Dealers and Clearing Organizations [Abstract]

Schedule of Due to (from) Broker-Dealers and Clearing Organizations [Table Text Block]

As of December 31, 2017 and 2016, amounts receivable from brokers, dealers and clearing organizations include:

	As of December 31,
	2017		2016
	(dollars in thousands)
Broker-dealers	$	409,499	$	78,898
Securities failed to deliver	87,820		—
Clearing organizations	6,126		—
Stock borrow interest receivable	4,733		—
	$	508,178	$	78,898

As of December 31, 2017 and 2016, amounts payable to brokers, dealers and clearing organizations include:

	As of December 31,
	2017		2016
	(dollars in thousands)
Broker-dealers	$	145,860	$	210,309
Securities failed to receive	53,540		—
Clearing organizations	48,257		—
Stock loan interest payable	4,496		—
	$	252,153	$	210,309