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Assets Segregated or Held in Separate Accounts Under Federal or Other Regulations
12 Months Ended
Dec. 31, 2014
Regulated Operations [Abstract]  
Assets Segregated or Held in Separate Accounts Under Federal or Other Regulations
Assets Segregated or Held in Separate Accounts Under Federal or Other Regulations
Cash and securities segregated under U.S. federal and other regulations ("Segregated assets") primarily relate to the Company’s regulated businesses and consist of the following (in thousands): 
 
December 31,
2014
 
December 31, 2013
   Cash and cash equivalents segregated under federal or other regulations
$
3,361

 
$
183,082

   Receivable from brokers, dealers and clearing organizations(1)

 
304,294

Total assets segregated or held in separate accounts under federal or other regulations
$
3,361

 
$
487,376


(1) Segregated assets included within Receivable from brokers, dealers and clearing organizations comprise cash and cash equivalents and U.S. government obligations primarily held as deposits with exchange clearing organizations.
Segregated assets at December 31, 2013 primarily comprise assets related to the Company's FCM business that was sold during the fourth quarter of 2014.