Restructuring and other impairment charges - Reconciliation of changes in accrued liabilities associated with restructuring program (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
2019 Footprint realignment plan
Restructuring Reserve [Roll Forward]
Balance, beginning	$ 11,870	$ 0
Subsequent accruals	1,542	13,753
Cash payments	(5,532)	(1,602)
Foreign currency translation	174	(281)
Balance, ending	8,054	11,870
2018 Footprint realignment plan
Restructuring Reserve [Roll Forward]
Balance, beginning	44,274	48,474
Subsequent accruals	5,948	(939)
Cash payments	(4,281)	(3,628)
Foreign currency translation	4,140	367
Balance, ending	50,081	44,274
2014 Footprint realignment plan
Restructuring Reserve [Roll Forward]
Balance, beginning	3,669	3,936
Subsequent accruals	606	313
Cash payments	(682)	(580)
Foreign currency translation	0	0
Balance, ending	$ 3,593	$ 3,669

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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- Definition

Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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