Annual report pursuant to Section 13 and 15(d)

Customer and Supplier Concentration (Details)

v3.5.0.2
Customer and Supplier Concentration (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Concentration Risk [Line Items]    
Revenues $ 6,784,039 $ 6,070,234
Revenue | Customer concentrations    
Concentration Risk [Line Items]    
Revenues $ 6,784,039 $ 6,070,234
Concentration risk, percentage 100.00% 100.00%
HSBC Bank USA | Revenue | Customer concentrations    
Concentration Risk [Line Items]    
Revenues $ 1,249,255 $ 1,877,943
Concentration risk, percentage 18.40% 24.10%
JM Bullion | Revenue | Customer concentrations    
Concentration Risk [Line Items]    
Revenues $ 717,309 $ 281,653
Concentration risk, percentage 10.60% 4.60%
Major Customers | Revenue | Customer concentrations    
Concentration Risk [Line Items]    
Revenues $ 1,966,564 $ 1,745,680
Concentration risk, percentage 29.00% 28.70%