|Market Vectors Junior Gold Miners ETF|
|The investment seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the Market Vectors® Global Junior Gold Miners Index.
The fund normally invests at least 80% of its total assets in securities that comprise the fund's benchmark index. The index includes companies that generate at least 50% of their revenues from (or, in certain circumstances, have at least 50% of their assets related to) gold mining and/or silver mining or have mining projects with the potential to generate at least 50% of their revenues from gold and/or silver when developed. It is non-diversified.|
| ||GDXJ||Category Avg|
|Annual Report Expense Ratio (net)||0.54%||N/A|
|Annual Holdings Turnover||64.00%||N/A|
|Total Net Assets||NaN||N/A|