Income Taxes Reconciliation of Total Gross Liability Related to Uncertain Tax Positions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning Balance	$ 19,742	$ 21,438	$ 25,384
Additions for tax positions related to prior years	2,235	874	0
Reductions for tax positions related to prior years	0	0	(1,933)
Additions for tax positions related to current year	0	1,091	1,132
Lapses in statutes of limitations/settlements	(4,494)	(3,578)	(4,198)
Foreign currency translation adjustment	65	(83)	1,053
Ending Balance	$ 17,548	$ 19,742	$ 21,438