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Summary of Significant Accounting Policies - Software Capitalization Costs, Goodwill and Purchased Intangible Assets and Advertising Expenses (Details)
12 Months Ended
Jun. 30, 2017
USD ($)
segment
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Software Capitalization Costs      
Capitalized development of software costs $ 0    
Goodwill and Purchased Intangible Assets      
Number of operating segments | segment 1    
Number of reporting units | segment 1    
Impairment of goodwill $ 0 $ 0 $ 0
Advertising Expenses      
Advertising expenses $ 400,000 $ 300,000 $ 500,000
Minimum      
Goodwill and Purchased Intangible Assets      
Estimated useful lives of purchased intangible assets 1 year    
Maximum      
Goodwill and Purchased Intangible Assets      
Estimated useful lives of purchased intangible assets 7 years