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Product Warranties (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Product Warranties Disclosures [Abstract]    
Standard product warranty, period 3 years  
Movement in Standard Product Warranty Accrual [Roll Forward]    
Beginning balance $ 6,164 $ 5,658
Add: Additions to warranty provision 698 2,907
Less: Warranty claims paid (632) (2,401)
Ending balance $ 6,230 $ 6,164