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Financial Instruments (Narrative) (Detail)
$ in Thousands
12 Months Ended
Jun. 30, 2016
USD ($)
Customer
Product
Jun. 30, 2015
USD ($)
Customer
Product
Jun. 30, 2014
Customer
Product
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Open letters of credit $ 0 $ 21  
Accounts Receivable      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Concentration Risk, Number | Customer 3 2  
Europe      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Net assets by geographic area $ 62,399 $ 57,161  
Asia      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Net assets by geographic area $ 48,846 $ 47,097  
Customer One | Accounts Receivable      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Percentage of net trade accounts receivable attributable to single customer 34.00% 40.00%  
Customer One | Net sales      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Percentage of net sales attributable to single customer 14.00% 13.00%  
Customer Two | Accounts Receivable      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Percentage of net trade accounts receivable attributable to single customer 20.00% 21.00%  
Customer three | Accounts Receivable      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Percentage of net trade accounts receivable attributable to single customer 11.00%    
Product Concentration | Net sales      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Concentration Risk, Number | Product 0 0 0
Minimum percentage of net sales for separate disclosure 10.00% 10.00% 10.00%
Customer Concentration | Net sales      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Concentration Risk, Number | Customer 1 1 0
Minimum percentage of net sales for separate disclosure 10.00% 10.00% 10.00%
Geographic Concentration | Europe | Purchases      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Percentage of purchases for a single geographic area 22.00% 12.00% 14.00%
Geographic Concentration | Asia | Purchases      
Financial Instruments Owned and Pledged as Collateral [Line Items]      
Percentage of purchases for a single geographic area 56.00% 65.00% 64.00%