Schedule of NovaGold Arrangement Stock Options Outstanding (Details)	9 Months Ended
Aug. 31, 2016 $ / shares shares
Number of outstanding options \| shares	6,408,381
Weighted average exercise price options outstanding	$ 0.52
Number of exercisable options \| shares	4,062,248
Weighted average exercise price	$ 3.64
Number of unvested options \| shares	2,346,133
NovaGold Arrangement Options [Member]
Number of outstanding options \| shares	324,820
Weighted average years to expiry	4 months 2 days
Weighted average exercise price options outstanding	$ 4.39
NovaGold Arrangement Range 1 [Member] \| NovaGold Arrangement Options [Member]
Exercise price lower range limit	2.82
Exercise price upper range limit	$ 3.99
Number of outstanding options \| shares	49,998
Weighted average years to expiry	6 months 29 days
Weighted average exercise price options outstanding	$ 2.98
NovaGold Arrangement Range 2 [Member] \| NovaGold Arrangement Options [Member]
Exercise price lower range limit	4.00
Exercise price upper range limit	$ 5.99
Number of outstanding options \| shares	258,156
Weighted average years to expiry	3 months 7 days
Weighted average exercise price options outstanding	$ 4.52
NovaGold Arrangement Range 3 [Member] \| NovaGold Arrangement Options [Member]
Exercise price lower range limit	6.00
Exercise price upper range limit	$ 6.61
Number of outstanding options \| shares	16,666
Weighted average years to expiry	9 months
Weighted average exercise price options outstanding	$ 6.61

Weighted average years to expiry

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
-Paragraph 2
-Subparagraph (g)
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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Number of non-vested options outstanding.

+ References

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