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Summary of Significant Accounting Policies - Revenue by Geographic Regions and Significant Geographic Area (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Segment Reporting Information        
Total revenues $ 48,947 $ 51,995 $ 103,841 $ 97,347
Americas        
Segment Reporting Information        
Total revenues 37,613 40,055 77,748 74,781
Asia/Pacific & Europe        
Segment Reporting Information        
Total revenues 11,334 11,940 26,093 22,566
United States        
Segment Reporting Information        
Total revenues 35,535 38,761 74,153 72,257
Japan        
Segment Reporting Information        
Total revenues $ 9,498 $ 9,220 $ 20,105 $ 17,813