Common Shares [Member] Concentration Risk [Member] Gold and Precious Metals/Minerals Risk [Member] Foreign Securities Risk/Emerging Markets Risk [Member] Geographic Investment Risk [Member] Canada Risk [Member] Convertible Securities Risk [Member] Junior and Intermediate Mining Companies Risk [Member] Private Placement Risk [Member] Restricted Security Risk [Member] Depositary Receipts Risk [Member] Warrants Risk [Member] Market Discount from Net Asset Value [Member] Valuation Risk [Member] Market Events Risk [Member]