Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities, at Fair Value (Fair Value of Financial Instruments) (Details)

v3.10.0.1
Assets and Liabilities, at Fair Value (Fair Value of Financial Instruments) (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Jun. 30, 2018
Financial assets:    
Derivative assets $ 2,706 $ 7,395
Financial liabilities:    
Liability on borrowed metals 227,198 280,346
Product financing arrangements 53,126 113,940
Derivative liabilities 35,974 20,457
Accrued liabilities [1] 4,838 5,129
Carrying Amount    
Financial assets:    
Cash 22,714 6,291
Receivables, net 57,332 35,856
Secured loans receivable 81,891 110,424
Income tax receivables 1,561 1,553
Financial liabilities:    
Lines of credit 179,000 200,000
Debt obligation (related party) 7,257 7,226
Liability on borrowed metals 227,198 280,346
Product financing arrangements 53,126 113,940
Accounts payable 60,993 45,997
Accrued liabilities 4,838 5,129
Other long-term liabilities (related party) 296 798
Notes payable 87,056 0
Carrying Amount | Liability on margin accounts    
Financial liabilities:    
Derivative liabilities 3,728 3,804
Carrying Amount | Options Held    
Financial liabilities:    
Derivative liabilities 116 168
Carrying Amount | Open sale and purchase commitments    
Financial liabilities:    
Derivative liabilities 25,488 16,485
Carrying Amount | Future contracts    
Financial liabilities:    
Derivative liabilities 2,163 0
Carrying Amount | Forward contracts    
Financial liabilities:    
Derivative liabilities 4,479 0
Carrying Amount | Open sale and purchase commitments    
Financial assets:    
Derivative assets 1,981 2,274
Carrying Amount | Options Held    
Financial assets:    
Derivative assets 392 390
Carrying Amount | Future contracts    
Financial assets:    
Derivative assets 140 238
Carrying Amount | Forward contracts    
Financial assets:    
Derivative assets 193 4,493
Fair value    
Financial assets:    
Cash 22,714 6,291
Receivables, net 57,332 35,856
Secured loans receivable 81,891 110,424
Income tax receivables 1,561 1,553
Financial liabilities:    
Lines of credit 179,000 200,000
Debt obligation (related party) 7,257 7,226
Liability on borrowed metals 227,198 280,346
Product financing arrangements 53,126 113,940
Accounts payable 60,993 45,997
Accrued liabilities 4,838 5,129
Other long-term liabilities (related party) 296 798
Notes payable 87,056 0
Fair value | Liability on margin accounts    
Financial liabilities:    
Derivative liabilities 3,728 3,804
Fair value | Options Held    
Financial liabilities:    
Derivative liabilities 116 168
Fair value | Open sale and purchase commitments    
Financial liabilities:    
Derivative liabilities 25,488 16,485
Fair value | Future contracts    
Financial liabilities:    
Derivative liabilities 2,163 0
Fair value | Forward contracts    
Financial liabilities:    
Derivative liabilities 4,479 0
Fair value | Open sale and purchase commitments    
Financial assets:    
Derivative assets 1,981 2,274
Fair value | Options Held    
Financial assets:    
Derivative assets 392 390
Fair value | Future contracts    
Financial assets:    
Derivative assets 140 238
Fair value | Forward contracts    
Financial assets:    
Derivative assets $ 193 $ 4,493
[1] Includes amounts of the consolidated variable interest entity, which is presented separately in the table below.