Basis of Presentation - Additional Information (Detail) - Jun. 30, 2015 - USD ($) $ in Millions	Total
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Minority interest owned percentage	60.00%
Recognized loss on dissolution of a joint venture	$ (1.3)

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

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