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MINERAL PROPERTIES (Details Textual) lb in Millions									1 Months Ended																		12 Months Ended							36 Months Ended
MINERAL PROPERTIES (Details Textual) lb in Millions	Mar. 11, 2016 shares	Nov. 05, 2015 CAD shares	Nov. 07, 2014 CAD shares	Nov. 07, 2012	Dec. 02, 2010 shares	Dec. 01, 2010 shares	Dec. 01, 2007 USD ($) shares	May 08, 2006 USD ($)	May 16, 2016 USD ($)	Apr. 05, 2016 USD ($)	Nov. 18, 2015 shares	Jul. 29, 2015 USD ($) km²	Jul. 29, 2015 CAD km²	Mar. 30, 2015 USD ($)	Feb. 27, 2015 shares	May 29, 2014 USD ($)	Dec. 31, 2013 USD ($) a	Dec. 31, 2013 CAD a	Nov. 25, 2013 CAD shares	Mar. 28, 2013 USD ($) lb $ / USTon-T	Oct. 31, 2012 USD ($) shares	Oct. 25, 2012 CAD shares	Mar. 01, 2011 USD ($)	Oct. 27, 2008 USD ($)	Jun. 16, 2006 USD ($)	May 22, 2006 USD ($)	May 31, 2016 USD ($)	May 31, 2016 CAD	May 31, 2015 CAD	May 31, 2013 USD ($)	May 31, 2013 CAD	May 31, 2012 shares	May 31, 2011 shares	May 31, 2014 shares	May 31, 2016 CAD	Mar. 31, 2016 USD ($)	Nov. 23, 2015 USD ($)	May 31, 2015 USD ($)	May 31, 2015 CAD	Nov. 17, 2014 USD ($)	Nov. 13, 2013 USD ($)	May 31, 2013 CAD	Nov. 10, 2010 USD ($)	Mar. 24, 2010 ha
Royalty Percentage																								1.00%
Capital Lease Obligations																					$ 10,000
Payments to Acquire Mineral Rights \| CAD																												CAD 32,594	CAD 32,508
Asset Retirement Obligations, Noncurrent																											$ 224,000								CAD 293,578			$ 107,000	CAD 132,579
Stock Issued During Period, Shares, New Issues \| shares	4,900,000														4,500,000
Fifth Year Lease [Member]
Lease Payments Common Shares Issued \| shares																					50,000
Fifth Through Ninth Year Lease [Member]
Capital Lease Obligations																					$ 10,000
Lease Payments Additional Common Shares Issued \| shares																					50,000
Corvus Nevada [Member]
Royalty Percentage																							1.00%
Mining Lease Agreement Term Of Contract																							10 years
Purchase Obligation		CAD 19,237																					$ 1,000,000
Royalty Expense																							$ 2,000,000
Capital Lease Obligations							$ 5,000												CAD 35,871			CAD 126,924															$ 10,000			$ 10,000	$ 10,000		$ 108,750
Lease Payments Common Shares Issued \| shares							25,000																									25,000	10,000	85,000
Common Stock Issued During Period, Shares, Issued for Lease Payments \| shares					46,250		20,000
Lease Payments Additional Common Value Issued							$ 5,000
Purchase Agreement Payable																				$ 160,000
Cash \| CAD																																										CAD 157,408
Notes Payable																				$ 240,000										$ 240,000												CAD 248,832
Debt Instrument, Interest Rate, Effective Percentage																				4.77%
Acquisition Costs, Period Cost																														$ 400,000	CAD 406,240
Price Per Ton of Overburden to be Stored on the Property \| $ / USTon-T																				0.02
Minimum Storage Capacity of the Property \| lb																				12
Advances and Royalty Guarantees, Commitments																											The lease includes a 4% NSR royalty on production, with an option to purchase the royalty for USD 500,000 per 1% or USD 2,000,000 for the entire 4% royalty. The lease also includes the option to purchase the property for USD 300,000.	The lease includes a 4% NSR royalty on production, with an option to purchase the royalty for USD 500,000 per 1% or USD 2,000,000 for the entire 4% royalty. The lease also includes the option to purchase the property for USD 300,000.
Corvus Nevada [Member] \| Royalty Of Two Percentage [Member]
Production Royalty Per Ounce																											$ 400
Royalty Percentage																											2.00%								2.00%
Corvus Nevada [Member] \| Royalty Of Three Percentage [Member]
Royalty Percentage																											3.00%								3.00%
Corvus Nevada [Member] \| Royalty Of Four Percentage [Member]
Production Royalty Per Ounce																											$ 500
Royalty Percentage																											0.00%								0.00%
Corvus Nevada [Member] \| Fourth Through Sixth Year Lease [Member]
Other Commitment																											$ 200,000
Corvus Nevada [Member] \| Seventh Through Tenth Year Lease [Member]
Other Commitment																											300,000
Corvus Nevada [Member] \| First Through Third Year Lease [Member]
Other Commitment																											$ 100,000
Stock Issued During Period, Shares, New Issues \| shares											25,000
Lunar Landing, LLC [Member]
Lease Term														3 years
Additional Lease Term														7 years
Advance Royalties														$ 5,000																						$ 5,000
Ahtna [Member] \| Raven Gold [Member]
Land Subject to Ground Leases \| ha																																												26,516
International Tower Hill Mines [Member]
Lease Payments Common Shares Issued \| shares		50,000
International Tower Hill Mines [Member] \| Corvus Nevada [Member]
Lease Payments Common Shares Issued \| shares			50,000																50,000			50,000
Lease Payments Additional Common Shares Issued \| shares						20,000
Lease Payments Additional Common Value Issued \| CAD			CAD 21,200
Chisna [Member]
Unpatented Mineral Claims				100.00%																							100.00%	100.00%
Proceeds From Sale Of Mineral Properties										$ 25,000
Payments to Acquire Mineral Rights \| CAD																												CAD 0	0
Chisna [Member] \| Royalty Of One Percentage [Member]
Royalty Percentage										1.00%
Chisna [Member] \| Royalty Of Other One Percentage [Member]
Royalty Percentage										1.00%
North Bullfrog [Member]
Unpatented Mineral Claims																											100.00%	100.00%
Land Subject to Ground Leases \| a																	1,600	1,600
Royalty Percentage								1.00%	1.00%																1.00%	1.00%
Mining Lease Agreement Term Of Contract								10 years	10 years																10 years
Purchase Obligation								$ 1,000,000	$ 1,000,000																$ 1,000,000	$ 1,000,000
Royalty Expense								$ 2,000,000	$ 4,000,000																$ 2,000,000	$ 2,000,000
Advance Royalties							$ 100,000
Payments to Acquire Mineral Rights \| CAD																												CAD 32,594	32,508
North Bullfrog [Member] \| Nevada Corporation [Member]
Royalty Percentage								1.00%								1.00%
Purchase Obligation								$ 850,000								$ 770,000
Royalty Expense								$ 2,550,000								$ 2,310,000
North Bullfrog [Member] \| Redstar Gold Corp [Member]
Purchase Obligation																								$ 1,000,000
West Pogo [Member]
Unpatented Mineral Claims																											100.00%	100.00%
West Pogo [Member] \| Royalty Of Three Percentage [Member]
Royalty Percentage												3.00%	3.00%
West Pogo [Member] \| Royalty Of One Percentage [Member]
Royalty Percentage												1.00%	1.00%
West Pogo [Member] \| Royalty Of Other One Percentage [Member]
Royalty Percentage												1.00%	1.00%
Payments to Acquire Mineral Rights												$ 2,000,000
West Pogo [Member] \| Royalty Of Additional One Percentage [Member]
Royalty Percentage												1.00%	1.00%
Payments to Acquire Mineral Rights												$ 5,000,000
West Pogo [Member] \| Raven Gold [Member]
Proceeds From Sale Of Mineral Properties												20,000	CAD 25,728
LMS Property [Member]
Unpatented Mineral Claims																											100.00%	100.00%
Proceeds From Sale Of Mineral Properties																											$ 350,000	CAD 473,585
Payments to Acquire Mineral Rights \| CAD																												CAD 0	CAD 0
Proceeds from Royalties Received																											$ 4,000,000
LMS Property [Member] \| Royalty Of Three Percentage [Member]
Royalty Percentage																											3.00%								3.00%
LMS Property [Member] \| Royalty Of One Percentage [Member]
Royalty Percentage																											1.00%								1.00%
LMS Property [Member] \| Royalty Of Other One Percentage [Member]
Royalty Percentage																											1.00%								1.00%
Land and Water Rights [Member]
Payments to Acquire Mineral Rights																	$ 1,034,626	CAD 1,100,118
Maximum [Member] \| Corvus Nevada [Member] \| Royalty Of Three Percentage [Member]
Production Royalty Per Ounce																											$ 500
Minimum [Member] \| Corvus Nevada [Member] \| Royalty Of Three Percentage [Member]
Production Royalty Per Ounce																											$ 401
NSR [Member]
Royalty Percentage																								4.00%
NSR [Member] \| Royalty Of Two Percentage [Member]
Royalty Percentage																										2.00%
NSR [Member] \| Corvus Nevada [Member]
Royalty Percentage																							2.00%
NSR [Member] \| Nevada Corporation [Member]
Royalty Percentage								3.00%								3.00%
NSR [Member] \| North Bullfrog [Member]
Royalty Percentage									4.00%
NSR [Member] \| North Bullfrog [Member] \| Royalty Of Two Percentage [Member]
Royalty Percentage																									2.00%
Royalty Agreements [Member] \| Corvus Nevada [Member]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year																							$ 20,000
Capital Leases, Future Minimum Payments Due in Three Years																							25,000
Capital Leases, Future Minimum Payments Due Thereafter																							$ 30,000
Royalty Agreements [Member] \| North Bullfrog [Member]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year								$ 4,000	$ 20,500							$ 2,400									$ 2,000	$ 8,000
Capital Leases, Future Minimum Payments Due in Three Years								3,500								2,400									2,000	4,800
Capital Leases, Future Minimum Payments Due Thereafter								4,500	$ 20,000							$ 3,600									$ 3,000	$ 7,200
Royalty Agreements [Member] \| North Bullfrog [Member] \| Nevada Corporation [Member]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year								2,000
Capital Leases, Future Minimum Payments Due in Three Years								2,000
Capital Leases, Future Minimum Payments Due Thereafter								$ 3,000
Royalty Agreements [Member] \| North Bullfrog [Member] \| Redstar Gold Corp [Member]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year																								$ 10,800
Capital Leases, Future Minimum Payments Due in Three Years																								10,800
Capital Leases, Future Minimum Payments Due Thereafter																								16,200
Purchase Obligation																								1,250,000
Royalty Expense																								$ 5,000,000
Royalty Agreements [Member] \| NSR [Member] \| North Bullfrog [Member]
Royalty Percentage								2.00%
Good Paster Database [Member] \| Raven Gold [Member]
Proceeds From Sale Of Mineral Properties												$ 100,000	CAD 136,058
Good Paster Database [Member] \| West Pogo [Member] \| Royalty Of One Percentage [Member]
Land Subject to Ground Leases \| km²												1,500	1,500
Royalty Percentage												1.00%	1.00%
Proceeds From Sale Of Mineral Properties												$ 2,000,000