Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Name:	us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Income Taxes - Summary of Changes in Valuation Allowance (Detail) (USD $) In Thousands, unless otherwise specified					12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Foreign tax credits [Member]	Dec. 31, 2012 Foreign tax credits [Member]	Dec. 31, 2011 Foreign tax credits [Member]	Dec. 31, 2013 Net operating losses [Member]	Dec. 31, 2012 Net operating losses [Member]	Dec. 31, 2011 Net operating losses [Member]	Dec. 31, 2013 Releases of valuation allowances in various jurisdictions [Member]	Dec. 31, 2012 Releases of valuation allowances in various jurisdictions [Member]	Dec. 31, 2011 Releases of valuation allowances in various jurisdictions [Member]
Valuation Allowance [Line Items]
Change in valuation allowance							$ (186)	$ 25	$ 946	$ 1,844	$ (15,580)	$ (4,423)	$ (7,407)
Valuation allowance as of December 31	$ 7,321	$ 22,876	$ 26,353	$ 32,102