Supplemental Financial Information - Accounts Receivable, Net of Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Apr. 23, 2021	Dec. 31, 2020
Receivables [Abstract]
Trade receivables	$ 157,292		$ 115,732
Value added tax receivables	9,667		10,781
Federal income tax receivables	8,420		8,420
Related party receivables	71		78
Other	183		1,211
Receivables Gross Current, Total	175,633	$ 134,906	136,222
Allowance for credit losses	(5,614)	(5,555)	(5,562)
Accounts receivable, net	$ 170,019	$ 129,351	$ 130,660

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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+ Details