Goodwill and Intangible Assets (Intangible Assets) (Details) (USD $)
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9 Months Ended |
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Mar. 31, 2015
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Mar. 31, 2014
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Jun. 30, 2014
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Indefinite-lived Intangible Assets [Line Items] |
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Gross carrying amount - finite lived intangible |
$ 8,396,000amrk_IntangibleAssetsGrossCarryingAmount
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$ 8,396,000amrk_IntangibleAssetsGrossCarryingAmount
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Accumulated amortization |
(5,931,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
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(5,643,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
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Net book value - finite lived intangible |
2,465,000us-gaap_IntangibleAssetsNetExcludingGoodwill
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2,753,000us-gaap_IntangibleAssetsNetExcludingGoodwill
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Amortization expense related to intangible assets |
300,000us-gaap_AmortizationOfIntangibleAssets
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300,000us-gaap_AmortizationOfIntangibleAssets
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Existing customer relationships |
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Indefinite-lived Intangible Assets [Line Items] |
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Gross carrying amount - finite lived intangible |
5,747,000amrk_IntangibleAssetsGrossCarryingAmount / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
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5,747,000amrk_IntangibleAssetsGrossCarryingAmount / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
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Accumulated amortization |
(3,736,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
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(3,448,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
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Net book value - finite lived intangible |
2,011,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
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2,299,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
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Non-compete and other |
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Indefinite-lived Intangible Assets [Line Items] |
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Estimated useful lives |
4 years
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Gross carrying amount - finite lived intangible |
2,000,000amrk_IntangibleAssetsGrossCarryingAmount / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = amrk_NoncompeteAgreementsAndOtherIntangibleAssetsMember
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2,000,000amrk_IntangibleAssetsGrossCarryingAmount / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = amrk_NoncompeteAgreementsAndOtherIntangibleAssetsMember
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Accumulated amortization |
(2,000,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = amrk_NoncompeteAgreementsAndOtherIntangibleAssetsMember
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(2,000,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = amrk_NoncompeteAgreementsAndOtherIntangibleAssetsMember
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Net book value - finite lived intangible |
0us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = amrk_NoncompeteAgreementsAndOtherIntangibleAssetsMember
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0us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = amrk_NoncompeteAgreementsAndOtherIntangibleAssetsMember
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Employment agreement |
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Indefinite-lived Intangible Assets [Line Items] |
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Estimated useful lives |
3 years
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Gross carrying amount - finite lived intangible |
195,000amrk_IntangibleAssetsGrossCarryingAmount / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_EmploymentContractsMember
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195,000amrk_IntangibleAssetsGrossCarryingAmount / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_EmploymentContractsMember
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Accumulated amortization |
(195,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_EmploymentContractsMember
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(195,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_EmploymentContractsMember
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Net book value - finite lived intangible |
0us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_EmploymentContractsMember
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0us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_EmploymentContractsMember
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Purchased intangibles subject to amortization |
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Indefinite-lived Intangible Assets [Line Items] |
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Gross carrying amount - finite lived intangible |
7,942,000amrk_IntangibleAssetsGrossCarryingAmount / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
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7,942,000amrk_IntangibleAssetsGrossCarryingAmount / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
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Accumulated amortization |
(5,931,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
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(5,643,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
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Net book value - finite lived intangible |
2,011,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
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2,299,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember
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Trade-name |
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Indefinite-lived Intangible Assets [Line Items] |
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Gross carrying amount |
454,000us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
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454,000us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
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Accumulated amortization |
0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
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0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
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Net book value |
$ 454,000amrk_IndefiniteLivedIntangibleAssetsNet / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
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$ 454,000amrk_IndefiniteLivedIntangibleAssetsNet / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
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Minimum |
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Indefinite-lived Intangible Assets [Line Items] |
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Estimated useful lives |
4 years
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Minimum | Existing customer relationships |
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Indefinite-lived Intangible Assets [Line Items] |
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Estimated useful lives |
5 years
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Maximum |
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Indefinite-lived Intangible Assets [Line Items] |
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Estimated useful lives |
15 years
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Maximum | Existing customer relationships |
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Indefinite-lived Intangible Assets [Line Items] |
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Estimated useful lives |
15 years
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