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ACCRUED WARRANTY - Warranty Obligations (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Beginning balance $ 2,850us-gaap_StandardProductWarrantyAccrual $ 2,913us-gaap_StandardProductWarrantyAccrual
Accruals for warranties issued during the period 3,253us-gaap_StandardProductWarrantyAccrualWarrantiesIssued 3,287us-gaap_StandardProductWarrantyAccrualWarrantiesIssued
Warranty costs incurred during the period (2,953)us-gaap_StandardProductWarrantyAccrualPayments (3,250)us-gaap_StandardProductWarrantyAccrualPayments
Ending balance $ 3,150us-gaap_StandardProductWarrantyAccrual $ 2,950us-gaap_StandardProductWarrantyAccrual