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Receivables (Components of Receivables and Secured Loans - Trading) (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
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Jun. 30, 2014
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Receivables and secured loans gross | $ 102,121amrk_ReceivablesAndSecuredLoansGrossTradingOperations | $ 80,670amrk_ReceivablesAndSecuredLoansGrossTradingOperations |
| Subtotal | 55,862amrk_ReceivablesExcludingSecuredLoansDerivativeAssetsGrossTradingOps | 39,409amrk_ReceivablesExcludingSecuredLoansDerivativeAssetsGrossTradingOps |
| Secured loans | 45,559us-gaap_NotesAndLoansReceivableNetCurrent | 41,261us-gaap_NotesAndLoansReceivableNetCurrent |
| Secured loans (long-term portion) | 700us-gaap_NotesAndLoansReceivableNetNoncurrent | 0us-gaap_NotesAndLoansReceivableNetNoncurrent |
| Less: allowance for doubtful accounts | (30)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | (30)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent |
| Subtotal | 102,091amrk_ReceivablesAndSecuredLoansFairValueDisclosure | 80,640amrk_ReceivablesAndSecuredLoansFairValueDisclosure |
| Derivative assets — open sale and purchase commitments, net | 4,380amrk_DerivativeAssetsOpenPurchaseAndSalesCommitments | 22,170amrk_DerivativeAssetsOpenPurchaseAndSalesCommitments |
| Derivative assets — futures contracts | 2,010amrk_DerivativeAssetsFuturesContractsCurrent | 0amrk_DerivativeAssetsFuturesContractsCurrent |
| Derivative assets — forward contracts | 0amrk_DerivativeAssetsForwardContracts | 14amrk_DerivativeAssetsForwardContracts |
| Receivables, net | 108,481amrk_ReceivablesAndSecuredLoansNetTradingOperations | 102,824amrk_ReceivablesAndSecuredLoansNetTradingOperations |
| Customer trade receivables | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Receivables and secured loans gross |
24,968amrk_ReceivablesAndSecuredLoansGrossTradingOperations / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_TradeAccountsReceivableMember |
1,744amrk_ReceivablesAndSecuredLoansGrossTradingOperations / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_TradeAccountsReceivableMember |
| Wholesale trade advances | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Receivables and secured loans gross |
18,820amrk_ReceivablesAndSecuredLoansGrossTradingOperations / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = amrk_WholesaleTradeAdvancesMember |
4,586amrk_ReceivablesAndSecuredLoansGrossTradingOperations / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = amrk_WholesaleTradeAdvancesMember |
| Due from brokers | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Receivables and secured loans gross |
$ 12,074amrk_ReceivablesAndSecuredLoansGrossTradingOperations / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = amrk_DueFromBrokersMember |
$ 33,079amrk_ReceivablesAndSecuredLoansGrossTradingOperations / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = amrk_DueFromBrokersMember |
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- Definition
Derivative Assets Forward Contracts No definition available.
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Derivative Assets Futures Contracts, Current No definition available.
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- Definition
Derivative Assets Open Purchase And Sales Commitments No definition available.
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Receivables and Secured Loans, Fair Value Disclosure No definition available.
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Receivables and Secured Loans Gross - Trading Operations No definition available.
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- Definition
The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Carrying value, as of the balance sheet date, of the portion of short-term, collateralized debt obligations due within one year or the operating cycle. No definition available.
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Receivables, Excluding Secured Loans & Derivative Assets, Gross, Trading Ops No definition available.
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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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