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Related Party Transactions (Schedule of Related Party) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [line items]
Salaries and benefits	$ 4,266	$ 4,716
Directors fees	707	702
Consulting fees	134	135
Share-based payments	11,115	5,449
Key management personnel compensation	16,222	11,002
Gold Group Management Inc and Mill Street Services Ltd [member]
Disclosure of transactions between related parties [line items]
Personnel costs	19	21
General and administrative expenses	138	189
Purchase of goods and service related party transactions	$ 157	$ 210

X

- Definition

General and administrative expense related party transactions.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Key management personnel compensation consulting fees.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Key management personnel compensation director fees.

+ References

No definition available.

+ Details

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Period Type:	duration

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- Definition

Personnel costs related party transactions.

+ References

No definition available.

+ Details

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- 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.

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- Definition

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

+ References

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-Name IAS
-Number 24
-IssueDate 2020-01-01
-Paragraph 17
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Balance Type:	debit
Period Type:	duration

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- Definition

The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2020-01-01
-Paragraph 17
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- Definition

The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2020-01-01
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- Definition

The amount of services received in related party transactions. [Refer: Related parties [member]]

+ References

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-Name IAS
-Number 24
-IssueDate 2020-01-01
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-URIDate 2020-01-01

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- Details

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