Quarterly report pursuant to Section 13 or 15(d)

Customer and Supplier Concentration (Details)

v3.4.0.3
Customer and Supplier Concentration (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Jun. 30, 2015
Concentration Risk [Line Items]          
Revenues $ 1,512,750 $ 1,624,495 $ 5,048,829 $ 4,616,832  
Total secured loans 64,827   64,827   $ 49,316
Secured loans | Customer concentrations          
Concentration Risk [Line Items]          
Total secured loans 64,827   $ 64,827   $ 49,316
Concentration risk, percentage     100.00%   100.00%
Revenue | Customer concentrations          
Concentration Risk [Line Items]          
Revenues $ 1,512,750 $ 1,624,495 $ 5,048,829 $ 4,616,832  
Concentration risk, percentage 100.00% 100.00% 100.00% 100.00%  
Accounts receivable | Customer concentrations          
Concentration Risk [Line Items]          
Total accounts receivable, net $ 25,928   $ 25,928   $ 30,025
Concentration risk, percentage     100.00%   100.00%
Customer A [Member] | Secured loans | Customer concentrations          
Concentration Risk [Line Items]          
Total secured loans 6,800   $ 6,800   $ 0
Concentration risk, percentage     10.50%   0.00%
China Great Wall Coins | Accounts receivable | Customer concentrations          
Concentration Risk [Line Items]          
Total accounts receivable, net 2,958   $ 2,958   $ 0
Concentration risk, percentage     11.40%   0.00%
Republic Metals Corporation | Accounts receivable | Customer concentrations          
Concentration Risk [Line Items]          
Total accounts receivable, net 6,185   $ 6,185   $ 0
Concentration risk, percentage     23.90%   0.00%
HSBC Bank USA | Revenue | Customer concentrations          
Concentration Risk [Line Items]          
Revenues $ 245,022 $ 481,036 $ 860,048 $ 1,464,027  
Concentration risk, percentage 16.20% 29.60% 17.00% 31.70%  
Jerrit Canyon | Accounts receivable | Customer concentrations          
Concentration Risk [Line Items]          
Total accounts receivable, net $ 5,050   $ 5,050   $ 1,435
Concentration risk, percentage     19.50%   4.80%
JM Bullion | Revenue | Customer concentrations          
Concentration Risk [Line Items]          
Revenues $ 154,848 $ 99,006 $ 558,804 $ 281,653  
Concentration risk, percentage 10.20% 6.10% 11.10% 6.10%  
Major Customers | Secured loans | Customer concentrations          
Concentration Risk [Line Items]          
Total secured loans $ 6,800   $ 6,800   $ 0
Concentration risk, percentage     10.50%   0.00%
Major Customers | Revenue | Customer concentrations          
Concentration Risk [Line Items]          
Revenues $ 399,870 $ 580,042 $ 1,418,852 $ 1,745,680  
Concentration risk, percentage 26.40% 35.70% 28.10% 37.80%  
Major Customers | Accounts receivable | Customer concentrations          
Concentration Risk [Line Items]          
Total accounts receivable, net $ 14,193   $ 14,193   $ 1,435
Concentration risk, percentage     54.80%   4.80%