XML 69 R26.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Short-term Investments (Details Narrative) | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Statement Line Items [Line Items] |  |
Annual interest rate (as a percent) | 1.40% |
Minimum [Member] |  |
Statement Line Items [Line Items] |  |
Annual interest rate (as a percent) |  | 0.80%
Maximum [Member] |  |
Statement Line Items [Line Items] |  |
Annual interest rate (as a percent) |  | 1.05%

X
- Definition Ifrs Statement Line Items. + References No definition available. + Details
Name: | NAN_IfrsStatementLineItems
Namespace Prefix: | NAN_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The annual interest rate on short-term investments, classified as cash equivalents. + References No definition available. + Details
Name: | NAN_ShortTermInvestmentsClassifiedAsCashEquivalentsAnnualInterestRate
Namespace Prefix: | NAN_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |