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Accrued Warranties - Schedule of Accrued Warranties (Detail) - USD ($)
$ in Thousands
9 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Commitments And Contingencies Disclosure [Abstract]    
Accrued warranties, beginning of year $ 163,331 $ 155,472
Warranty expense 47,531 67,157
Warranty payments (cash or in-kind) (40,182) (38,798)
Other 2,799 (28,042)
Accrued warranties, end of year $ 173,479 $ 155,789