Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies Fair Value of Financial Instruments (Details)

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Summary of Significant Accounting Policies Fair Value of Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Jun. 30, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Receivables, advances receivables and secured loans $ 83,326 $ 94,509
Liability for borrowed metals 11,226 20,117
Product financing obligation 25,506 38,554
Accrued liabilities 4,985 6,601
Fair value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash 15,015 21,565
Receivables, advances receivables and secured loans 83,326 94,509
Lines of credit 106,000 95,000
Liability for borrowed metals 11,226 20,117
Product financing obligation 25,506 38,554
Accounts payable, margin accounts, advances and other payables 52,573 55,818
Accrued liabilities 4,985 6,601
Payable to parent 7,615 9,520
Carrying amount
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash 15,015 21,565
Lines of credit 106,000 95,000
Liability for borrowed metals 11,226 20,117
Product financing obligation 25,506 38,554
Accounts payable, margin accounts, advances and other payables 52,573 55,818
Accrued liabilities 4,985 6,601
Payable to parent 7,615 9,520
Open sales and purchase commitments | Fair value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 3,293 0
Open sales and purchase commitments | Carrying amount
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 3,293 0
Forward Contracts | Fair value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 10,921 14,967
Forward Contracts | Carrying amount
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 10,921 14,967
Derivative assets — future contracts | Fair value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 4,933 471
Derivative assets — future contracts | Carrying amount
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 4,933 471
Forward Contracts | Fair value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 10 0
Forward Contracts | Carrying amount
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 10 0
Open sales and purchase commitments | Fair value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities 32,027 30,192
Open sales and purchase commitments | Carrying amount
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative liabilities $ 32,027 $ 30,192