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Allocation of Consideration Transferred for Crescendo (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Feb. 28, 2014 Crescendo Biosciences, Inc.
Business Acquisition [Line Items]
Other assets acquired				$ 15,826
Intangible assets				196,600
Goodwill	169,181	56,850	56,850	112,331
Total assets acquired				324,757
Deferred tax liability				44,213
Other liabilities assumed				21,594
Total net assets acquired				$ 258,950