Purchase of Noncontrolling Interest in Joint Venture - Additional Information (Detail) (USD $)	0 Months Ended
Apr. 02, 2014	Apr. 02, 2014
Business Combinations Discontinued Operations And Related Transactions [Line Items]
Payment to remaining joint venture interest	$ 19,604,000
Remaining joint venture interest		50.00%

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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