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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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 500	$ 400	$ 900	$ 900
2021	800		800
2022	1,700		1,700
2023	1,700		1,700
2024	1,600		1,600
2025	1,400		$ 1,400
Remaining amortization period			12 years 1 month 6 days
Goodwill	$ 29,316		$ 29,316		$ 29,508
Asia-Pacific [Member]
Finite Lived Intangible Assets [Line Items]
Percentage of fair value of reporting unit exceeded carrying value	15.00%		15.00%
Goodwill	$ 7,606		$ 7,606		$ 7,730
Patents [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			0 years
Land Use Rights [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			55 years
Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			6 years 4 months 24 days
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			9 years 7 months 6 days
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Remaining amortization period			9 years 1 month 6 days