Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities, at Fair Value (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details)

v3.19.3
Assets and Liabilities, at Fair Value (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets $ 19,546 $ 2,428
Derivative liabilities 6,690 9,971
Fair Value on a Recurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Inventory 369,862 292,844
Precious metals held under financing arrangements 200,809 208,792
Total assets valued at fair value 590,217 504,064
Liability on borrowed metals 196,738 201,144
Product financing arrangements 159,130 94,505
Total liabilities, valued at fair value 362,558 305,620
Fair Value on a Recurring Basis | Liability of price protection programs    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 13 22
Fair Value on a Recurring Basis | Liability on margin accounts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 3,455 2,981
Fair Value on a Recurring Basis | Open sale and purchase commitments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 3,115 3,822
Fair Value on a Recurring Basis | Future contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities   1,241
Fair Value on a Recurring Basis | Forward contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 107 1,905
Fair Value on a Recurring Basis | Derivative assets — open sale and purchase commitments, net    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 4,960 2,322
Fair Value on a Recurring Basis | Option contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 11 61
Fair Value on a Recurring Basis | Future contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 3,871 2
Fair Value on a Recurring Basis | Forward contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 10,704 43
Fair Value on a Recurring Basis | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Inventory 369,862 292,844
Precious metals held under financing arrangements 200,809 208,792
Total assets valued at fair value 590,217 504,064
Liability on borrowed metals 196,738 201,144
Product financing arrangements 159,130 94,505
Total liabilities, valued at fair value 362,545 305,598
Fair Value on a Recurring Basis | Level 1 | Liability of price protection programs    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value on a Recurring Basis | Level 1 | Liability on margin accounts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 3,455 2,981
Fair Value on a Recurring Basis | Level 1 | Open sale and purchase commitments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 3,115 3,822
Fair Value on a Recurring Basis | Level 1 | Future contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities   1,241
Fair Value on a Recurring Basis | Level 1 | Forward contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 107 1,905
Fair Value on a Recurring Basis | Level 1 | Derivative assets — open sale and purchase commitments, net    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 4,960 2,322
Fair Value on a Recurring Basis | Level 1 | Option contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 11 61
Fair Value on a Recurring Basis | Level 1 | Future contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 3,871 2
Fair Value on a Recurring Basis | Level 1 | Forward contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 10,704 43
Fair Value on a Recurring Basis | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Inventory 0 0
Precious metals held under financing arrangements 0 0
Total assets valued at fair value 0 0
Liability on borrowed metals 0 0
Product financing arrangements 0 0
Total liabilities, valued at fair value 0 0
Fair Value on a Recurring Basis | Level 2 | Liability of price protection programs    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value on a Recurring Basis | Level 2 | Liability on margin accounts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value on a Recurring Basis | Level 2 | Open sale and purchase commitments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value on a Recurring Basis | Level 2 | Future contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities   0
Fair Value on a Recurring Basis | Level 2 | Forward contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value on a Recurring Basis | Level 2 | Derivative assets — open sale and purchase commitments, net    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0 0
Fair Value on a Recurring Basis | Level 2 | Option contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0 0
Fair Value on a Recurring Basis | Level 2 | Future contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0 0
Fair Value on a Recurring Basis | Level 2 | Forward contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0 0
Fair Value on a Recurring Basis | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Inventory 0 0
Precious metals held under financing arrangements 0 0
Total assets valued at fair value 0 0
Liability on borrowed metals 0 0
Product financing arrangements 0 0
Total liabilities, valued at fair value 13 22
Fair Value on a Recurring Basis | Level 3 | Liability of price protection programs    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 13 22
Fair Value on a Recurring Basis | Level 3 | Liability on margin accounts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value on a Recurring Basis | Level 3 | Open sale and purchase commitments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value on a Recurring Basis | Level 3 | Future contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities   0
Fair Value on a Recurring Basis | Level 3 | Forward contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative liabilities 0 0
Fair Value on a Recurring Basis | Level 3 | Derivative assets — open sale and purchase commitments, net    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0 0
Fair Value on a Recurring Basis | Level 3 | Option contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0 0
Fair Value on a Recurring Basis | Level 3 | Future contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0 0
Fair Value on a Recurring Basis | Level 3 | Forward contracts    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets $ 0 $ 0