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Inventory step-up allocation charges.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($)			12 Months Ended
	Oct. 01, 2020	Oct. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Goodwill impairment adjustment	$ 0	$ 0
Purchase price allocation adjustments				$ (6,487,000)
Definite lived intangible assets			$ 14,443,000	15,116,000
Amortization of Intangible Assets			1,800,000	1,500,000	$ 1,500,000
2021			1,700,000
2022			1,600,000
2023			1,600,000
2024			1,600,000
2025			$ 1,400,000
Remaining amortization period			12 years 4 months 24 days
Patents [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			5 years
Land Use Rights [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			55 years 7 months 6 days
Trademark [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			8 years 7 months 6 days
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			10 years 1 month 6 days
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			9 years 6 months
Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization period of intangible assets			1 year
Minimum [Member] \| Actual [Member]
Finite Lived Intangible Assets [Line Items]
Amortization period of intangible assets			4 years
Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization period of intangible assets			20 years
Maximum [Member] \| Actual [Member]
Finite Lived Intangible Assets [Line Items]
Amortization period of intangible assets			82 years
EMEA [Member]
Finite Lived Intangible Assets [Line Items]
Purchase price allocation adjustments				(6,487,000)
Definite lived intangible assets				6,300,000
Inventory step-up allocation				$ 200,000