Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jun. 30, 2013
Schedule Of Fair Value Measurements [Line Items]
Reduction in contingent consideration	$ (22.1)
Interchain [Member]
Schedule Of Fair Value Measurements [Line Items]
Contingent consideration related to earn-out	$ 0.3

Amount of (increase) decrease in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 4

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e7008-128479

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration