Subsequent Event - Additional Information (Detail) (Scenario, Forecast [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014
Scenario, Forecast [Member]
Subsequent Event [Line Items]
Employee-related compensation charges	$ 0.8

Cash outflows for payments of postemployment benefits (such as severance pay and health insurance benefits) recognized during the period. Postemployment benefits are benefits paid to employees after employment but before retirement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

Name:	us-gaap_PaymentsForPostemploymentBenefits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration