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Balance Sheet Components - Product Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Jun. 30, 2015
Product Warranties:          
Balance, beginning of period $ 7,545 $ 7,077 $ 7,700 $ 7,083  
Provision for warranty 4,678 3,304 8,544 6,960  
Costs charged to accrual (2,854) (3,305) (6,673) (6,770)  
Change in estimated liability for pre-existing warranties (1,592) (116) (1,794) (313)  
Balance, end of period 7,777 6,960 7,777 6,960  
Current portion (6,116) (6,960) (6,116) (6,960) $ (7,700)
Long-term portion $ 1,661 $ 0 $ 1,661 $ 0