XML 44 R37.htm IDEA: XBRL DOCUMENT
v3.8.0.1

CRITICAL ACCOUNTING JUDGEMENTS, ESTIMATES AND ASSUMPTIONS (Details) - CAD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
CRITICAL ACCOUNTING JUDGMENTS, ESTIMATES AND ASSUMPTIONS |  |
Exploration and evaluation assets | $ 50,494 | $ 38,342

X
- Definition The amount of exploration and evaluation assets recognised as tangible assets in accordance with the entity's accounting policy. [Refer: Exploration and evaluation assets [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2017-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=6&date=2017-03-01&anchor=para_25&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_TangibleExplorationAndEvaluationAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | nanv_CriticalAccountingJudgementsEstimatesAndAssumptionsAbstract
Namespace Prefix: | nanv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration