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Summary of Significant Accounting Policies - Long-Lived Assets (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Impairment of long-lived assets held-for-use $ 0 $ 0 $ 0