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Accrued Warranties - Schedule of Accrued Warranties (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Commitments And Contingencies Disclosure [Abstract]    
Accrued warranties, beginning of year $ 128,411 $ 97,289
Warranty expense 39,405 33,184
Warranty payments (cash or in-kind) (26,704) (24,286)
Other 5,585 4,070
Accrued warranties, end of year $ 146,697 $ 110,257