XML 109 R107.htm IDEA: XBRL DOCUMENT v3.20.1

SEGMENTED INFORMATION - Additional information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
SEGMENTED INFORMATION
Severance and Other Termination Benefits	$ 1.1	$ 4.1
Major Customer [Member]
SEGMENTED INFORMATION
Percentage of entity's revenue	89.00%	79.00%

X

- Definition

The percentage of the entity's revenue. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 8
-IssueDate 2019-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_34&doctype=Standard
-URIDate 2019-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of detailed information about reportable operating segments.

+ References

No definition available.

+ Details

Name:	ngd_SegmentedInformationLineItems
Namespace Prefix:	ngd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount represents the value of severance and other termination benefits.

+ References

No definition available.

+ Details

Name:	ngd_SeveranceAndOtherTerminationBenefits
Namespace Prefix:	ngd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ifrs-full_MajorCustomersAxis=ngd_MajorCustomerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: