Schedule of Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 7,402		$ 7,043		$ 9,391
Charged to costs and expenses	763		1,289		1,148
Deductions from reserves, net	859	[1],[2]	930	[1],[2]	3,496	[1],[2]
Balance at end of year	7,306		7,402		7,043
Income Tax Valuation Allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	3,961		2,777		4,323
Charged to costs and expenses	977	[3]	1,184	[3]	0	[3]
Deductions from reserves, net	0	[3]	0	[3]	1,546	[3]
Balance at end of year	$ 4,938		$ 3,961		$ 2,777

[1] Bad debts written off, net of recoveries.

[2] Activity for 2013, 2012 and 2011 includes currency translation gains (losses) of $(121), $428 and $(387), respectively.

[3] Activity for 2013, 2012 and 2011 includes currency translation gains (losses) of $242, $97 and $(123), respectively.