Note 11 - Net Foreign Exchange Gain - Foreign Exchange Gain (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Line Items [Line Items]
Unrealised foreign exchange gain	$ 8,367	$ 31,411	$ 230
Realised foreign exchange loss	(4,062)	(1,750)	(7)
Net foreign exchange gain	$ 4,305	$ 29,661	$ 223

The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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