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Segment, Customers, and Geographic Information - Major Customer Accounts Receivable as Percentage of Accounts Receivable (Detail) (Accounts Receivable [Member], Customer A [Member])
3 Months Ended 12 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Accounts Receivable [Member] | Customer A [Member]
   
Revenue, Major Customer [Line Items]    
Accounts receivable major customer percentage 18.00% 28.00%