Trade Accounts and Notes Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Accounts receivable	$ 264,771	$ 233,274
Notes receivable	2,005	2,280
Total trade accounts and notes receivable	266,776	235,554
Less allowance for doubtful accounts	2,384	1,145
Trade accounts and notes receivable, net	$ 264,392	$ 234,409