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Other Current Assets (Schedule related to other current assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other Current Assets [abstract]
Prepaid expenses	$ 2,622	$ 2,942
Investments in equity securities (note 11)	1,059
Assets held for sale	659	1,069
Income tax recoverable		2,553
Other current assets	4,340	$ 6,564
Write-downs (reversals of write-downs) of property, plant and equipment	$ 410

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- Definition

Other Current Assets [abstract].

+ References

No definition available.

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- Definition

The amount of current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Current financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
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- Definition

The amount of current investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: Investments in equity instruments designated at fair value through other comprehensive income]

+ References

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- Definition

The amount recognised as a current asset for expenditures made prior to the period when the economic benefit will be realised.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The excess of amount paid for current tax in respect of current and prior periods over the amount due for those periods. Current tax is the amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

+ References

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- Definition

The amount of current assets that the entity does not separately disclose in the same statement or note. [Refer: Current assets]

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The amount recognised resulting from the write-down of property, plant and equipment to its recoverable amount or reversals of those write-downs. [Refer: Property, plant and equipment]

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