Schedule of Changes in Projected Benefit Obligations and Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Change in projected benefit obligation:
Projected benefit obligation, beginning of period	$ 42,575	$ 39,390
Service cost	2,680	2,791
Interest cost	434	744
Participant contributions	1,046	965
Benefits received (paid)	1,567	(1,279)
Actuarial loss on obligation	8,071	1,520
Currency translation adjustment	(2,279)	(1,556)
Projected benefit obligation, end of period	54,094	42,575	$ 39,390
Change in plan assets:
Plan assets at fair value, beginning of period	32,509	31,965
Actual return on plan assets	431	207
Employer contributions	2,043	1,914
Participant contributions	1,046	965
Benefits received (paid)	1,567	(1,279)
Currency translation adjustment	(1,739)	(1,263)
Plan assets at fair value, end of period	35,857	32,509	31,965
Other non-current assets:
Deferred tax asset	3,857	2,129
Other non-current liabilities:
Underfunded pension liability	18,237	10,066
Amounts recognized in accumulated other comprehensive income, net of tax:
Pension adjustment	7,031	2,244	$ (1,443)
Accumulated benefit obligation, end of period	$ 50,772	$ 38,734