Income Taxes - Changes in Valuation Allowance for Deferred Tax Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Beginning balance	$ 162,968	$ 200,056	$ 207,774
Charged to expense (income)	24,062	(21,184)	20,124
NOL and tax credit expiration	(10,150)	(25,305)	(25,965)
Translation adjustment	1,849	9,401	(1,877)
Ending balance	$ 178,729	$ 162,968	$ 200,056