Significant Customers Narrative (Detail)	3 Months Ended
Dec. 31, 2013 customer
Risks and Uncertainties [Abstract]
Number of major customer by revenue	1
Percentage of revenues from one customer	13.00%

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

No definition available.

Name:	us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration