Subsequent Event (detail)	Mar. 31, 2014
Subsequent Event [Abstract]
Business Combination Step Acquisition Equity Interest In Acquiree Percentage	50.00%

In a business combination achieved in stages, this element represents the acquisition-date percentage of equity in the acquiree held by the acquirer immediately before the acquisition date.

No definition available.

Name:	us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant