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Impairment of Long-Lived Assets - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Sep. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Impairment Charges [Line Items]        
Impairment of property, plant and equipment $ 789 $ 0 $ 789 $ 0
Impairment Charge       $ 931
Assets Leased to Others [Member]
       
Impairment Charges [Line Items]        
Number of leased offices   3