Note 21 - Prepayments - Prepayments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement Line Items [Line Items]
Prepayments of property, plant and equipment	$ 2,951	$ 0
Other prepayments	661	55
Current prepayments and other current assets	6,930	1,974
South African operations [member]
Statement Line Items [Line Items]
Suppliers	1,552	846
Zimbabwean operations [member]
Statement Line Items [Line Items]
Suppliers	$ 1,766	$ 1,073

The amount of current prepayments and other current assets. [Refer: Other current assets; Current prepayments]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

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