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Inventories - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Classes Of Inventories [Abstract]
Inventories recognized as expense	$ 279,728	$ 313,695	$ 388,079
Amount expensed (credited) to cost of sales	$ (240)	$ (322)	$ 1,613

X

- References

No definition available.

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- Definition

The amount of inventories recognised as an expense during the period. [Refer: Inventories]

+ References

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- Definition

The amount recognised resulting from the write-down of inventories to net realisable value or reversals of those write-downs. [Refer: Inventories]

+ References

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