Note 1 - The Company (Details Textual) $ in Thousands	12 Months Ended
Nov. 30, 2017 USD ($)
Revenues	$ 0
Donlin Gold [Member]
Equity Method Investment, Ownership Percentage	50.00%
Galore Creek [Member]
Equity Method Investment, Ownership Percentage	50.00%
Galore Creek [Member] \| Teck [Member]
Equity Method Investment, Ownership Percentage	50.00%

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration