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Revenue and Accounts Receivable, Net - Revenue from External Customers by Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 156,264	$ 153,505	$ 153,133	$ 151,778	$ 174,694	$ 200,724	$ 193,896	$ 184,163	$ 614,680	$ 753,477	$ 680,241
United States
Net sales									255,651	407,291	315,214
Asia (excluding the PRC)
Net sales									117,142	104,324	124,657
People's Republic of China
Net sales									88,246	83,677	91,446
Europe
Net sales									108,185	94,491	85,228
Latin America
Net sales									17,481	30,006	30,954
Other
Net sales									$ 27,975	$ 33,688	$ 32,742

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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