SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS - ALLOWANCE FOR DOUBTFUL ACCOUNTS (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 10,255
Balance at End of Year	9,348	$ 10,255
Allowance for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	10,255	8,636	$ 8,026
Additions Charged to Income	2,521	1,949	2,156
Accounts Receivable Write-offs	(2,601)	(596)	(862)
Translation and Other	(827)	266	(684)
Balance at End of Year	$ 9,348	$ 10,255	$ 8,636