Schedule of Prepayments and Other Current Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Prepaid And Other Current Assets [Line Items]
Contract manufacturer and supplier prepayments	$ 143,392	$ 131,642
Prepaid taxes	8,046	9,646
Prepaid maintenance and other services	8,503	8,487
Other prepayments	16,753	12,744
Total prepayments	$ 176,694	$ 162,519

Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant