Components of Debt (Parenthetical) (Detail) - London Interbank Offered Rate (LIBOR)	12 Months Ended
	Jun. 30, 2017
Line of credit
Line Of Credit Facility [Line Items]
Debt instrument, rate added on variable rate	1.50%
Term Loans
Line Of Credit Facility [Line Items]
Debt instrument, rate added on variable rate	1.50%
Yen denominated line of credit
Line Of Credit Facility [Line Items]
Debt instrument, rate added on variable rate	0.625%