Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Assets and Liabilities, at Fair Value (Fair Value of Financial Instruments) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Jun. 30, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets $ 28,775 $ 33,732
Income taxes receivable from Former Parent 8,341  
Liability on borrowed metals 4,196 4,352
Product financing arrangements 117,789 59,358
Derivative liabilities 13,519 36,454
Accrued liabilities 4,279 7,660
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash 16,753 17,142
Receivables, net 20,746 43,302
Secured loans 82,782 70,504
Income taxes receivable from Former Parent   7,318
Lines of credit 203,000 212,000
Liability on borrowed metals 4,196 4,352
Product financing arrangements 117,789 59,358
Accounts payable, advances and other payables 61,867 46,769
Accrued liabilities 4,279 7,660
Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash 16,753 17,142
Receivables, net 20,746 43,302
Secured loans 82,782 70,504
Income taxes receivable from Former Parent 8,341 7,318
Lines of credit 203,000 212,000
Liability on borrowed metals 4,196 4,352
Product financing arrangements 117,789 59,358
Accounts payable, advances and other payables 61,867 46,769
Accrued liabilities 4,279 7,660
Open sale and purchase commitments | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 21,874 32,347
Open sale and purchase commitments | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 21,874 32,347
Future contracts | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 6,901 0
Future contracts | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 6,901 0
Forward contracts | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 1,385
Forward contracts | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 1,385
Derivative liability margin accounts | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 8,372 8,182
Derivative liability margin accounts | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 8,372 8,182
Open sale and purchase commitments | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 662 1,919
Open sale and purchase commitments | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 662 1,919
Future contracts | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 0 13,914
Future contracts | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 0 13,914
Forward contracts | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 4,485 12,439
Forward contracts | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 4,485 12,439
Former Parent | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Income taxes receivable from Former Parent 0 203
Former Parent | Fair value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Income taxes receivable from Former Parent $ 0 $ 203