XML 43 R36.htm IDEA: XBRL DOCUMENT
v3.8.0.1

BASIS OF PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES - Depreciation and amortization rates (Details) | 12 Months Ended
--- | ---
Dec. 31, 2017
Exploration equipment |
Equipment |
Depreciation and amortization rate (as a percent) | 20.00%
Computer Software |
Equipment |
Depreciation and amortization rate (as a percent) | 50.00%
Computer Equipment |
Equipment |
Depreciation and amortization rate (as a percent) | 55.00%

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the depreciation and amortization rate. + References No definition available. + Details
Name: | nanv_DepreciationAndAmortizationRate
Namespace Prefix: | nanv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_TangibleExplorationAndEvaluationAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ComputerSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |