Geographic Information (Details) (USD $) In Thousands, unless otherwise specified
|
3 Months Ended |
6 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Jun. 30, 2014
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Revenue |
$ 1,538,871us-gaap_Revenues
|
$ 1,488,691us-gaap_Revenues
|
$ 2,992,337us-gaap_Revenues
|
$ 2,984,716us-gaap_Revenues
|
|
Inventories |
143,111us-gaap_InventoryNet
|
|
143,111us-gaap_InventoryNet
|
|
150,944us-gaap_InventoryNet
|
Restricted and Nonrestricted Inventory, Net |
223,771amrk_RestrictedandNonrestrictedInventoryNet
|
|
223,771amrk_RestrictedandNonrestrictedInventoryNet
|
|
175,554amrk_RestrictedandNonrestrictedInventoryNet
|
Assets |
373,938us-gaap_Assets
|
|
373,938us-gaap_Assets
|
|
305,138us-gaap_Assets
|
Long term assets |
11,347us-gaap_NoncurrentAssets
|
|
11,347us-gaap_NoncurrentAssets
|
|
9,815us-gaap_NoncurrentAssets
|
United States |
|
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Revenue |
1,345,428us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US
|
1,256,344us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US
|
2,658,914us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US
|
2,556,790us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US
|
|
Inventories |
201,825us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = country_US
|
|
201,825us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = country_US
|
|
159,145us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = country_US
|
Assets |
350,982us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_US
|
|
350,982us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_US
|
|
285,092us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_US
|
Long term assets |
11,267us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US
|
|
11,267us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US
|
|
9,726us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_US
|
Europe |
|
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Revenue |
64,460us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
121,760us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
119,410us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
192,064us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
|
Inventories |
9,475us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
|
9,475us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
|
10,500us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
Assets |
10,485us-gaap_Assets / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
|
10,485us-gaap_Assets / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
|
14,137us-gaap_Assets / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
Long term assets |
80us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
|
80us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
|
89us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember
|
North America, excluding USA |
|
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Revenue |
110,057us-gaap_Revenues / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
100,502us-gaap_Revenues / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
181,836us-gaap_Revenues / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
177,268us-gaap_Revenues / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
|
Inventories |
3,846us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
|
3,846us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
|
4,091us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
Assets |
3,846us-gaap_Assets / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
|
3,846us-gaap_Assets / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
|
4,091us-gaap_Assets / us-gaap_StatementGeographicalAxis = amrk_NorthAmericaexcludingUSAMember
|
Asia Pacific |
|
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Revenue |
18,732us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
|
9,206us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
|
30,044us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
|
56,533us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember
|
|
Africa |
|
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Revenue |
25us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_AfricaMember
|
0us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_AfricaMember
|
25us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_AfricaMember
|
0us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_AfricaMember
|
|
Australia |
|
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Revenue |
167us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_AU
|
879us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_AU
|
2,106us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_AU
|
2,029us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_AU
|
|
South America |
|
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Revenue |
2us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_SouthAmericaMember
|
0us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_SouthAmericaMember
|
2us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_SouthAmericaMember
|
32us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_SouthAmericaMember
|
|
Asia |
|
|
|
|
|
Segment Reporting Information [Line Items] |
|
|
|
|
|
Inventories |
8,625us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
|
|
8,625us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
|
|
1,818us-gaap_InventoryNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
|
Assets |
$ 8,625us-gaap_Assets / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
|
|
$ 8,625us-gaap_Assets / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
|
|
$ 1,818us-gaap_Assets / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
|