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Segment, Customers, and Geographic Information - Major Customers as Percentage of Net Revenue (Detail) - Sales Revenue, Net [Member] - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Customer A [Member]        
Revenue, Major Customer [Line Items]        
Concentration Risk, Percentage 21.00%   15.00%  
Customer B [Member]        
Revenue, Major Customer [Line Items]        
Concentration Risk, Percentage 13.00%   11.00%  
Customer C [Member]        
Revenue, Major Customer [Line Items]        
Concentration Risk, Percentage   20.00%   19.00%
Customer D [Member]        
Revenue, Major Customer [Line Items]        
Concentration Risk, Percentage   14.00%   12.00%