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Commitments and Contingencies (Narrative) (Details)
$ in Thousands
 12 Months Ended
Feb. 14, 2017
Jul. 06, 2016
ft²
extension
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
vendor
Jun. 30, 2016
USD ($)
vendor
Jun. 30, 2015
USD ($)
vendor
Long-term Purchase Commitment [Line Items]            
Term of lease (in months) 42 months 135 months        
Number of lease extension options | extension   2        
Length of lease extension options   5 years        
Minimum lease payments       $ 1,687    
Proceeds from legal settlement       12,800    
Capital expenditures       $ 8,849 $ 12,081 $ 20,762
Minimum [Member]            
Long-term Purchase Commitment [Line Items]            
Termination period under terms of distribution agreement (days)       30 days    
Maximum [Member]            
Long-term Purchase Commitment [Line Items]            
Termination period under terms of distribution agreement (days)       120 days    
Supplier Concentration Risk [Member] | Sales [Member]            
Long-term Purchase Commitment [Line Items]            
Concentration risk, supplier | vendor       10 10 10
Current Square Footage [Member]            
Long-term Purchase Commitment [Line Items]            
Area leased under lease agreement (in square feet) | ft²   741,000        
CDC Brasil S A [Member]            
Long-term Purchase Commitment [Line Items]            
Escrow deposit disbursements to seller       $ 4,100    
Cash held in escrow       3,400 $ 3,500  
Undiscounted pre-acquisition contingencies, maximum       3,300    
Prepaid expenses and other assets (current)       2,212 2,346  
Other assets (noncurrent)       0 0  
Other current liabilities       2,212 2,346  
Other long-term liabilities       0 0  
Network1 [Member]            
Long-term Purchase Commitment [Line Items]            
Cash held in escrow       13,000 4,700  
Undiscounted pre-acquisition contingencies, maximum       29,900    
Escrow deposits received from seller       8,700 1,300  
Undiscounted pre-acquisition contingencies, minimum       10,200    
Prepaid expenses and other assets (current)       1,294 595  
Other assets (noncurrent)       8,235 9,837  
Other current liabilities       1,294 595  
Other long-term liabilities       $ 8,235 $ 9,837  
Scenario, Forecast [Member] | Minimum [Member]            
Long-term Purchase Commitment [Line Items]            
Capital expenditures     $ 8,000      
Scenario, Forecast [Member] | Maximum [Member]            
Long-term Purchase Commitment [Line Items]            
Capital expenditures     $ 11,000