Schedule of Changes in Projected Benefit Obligations and Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Change in projected benefit obligation:
Projected benefit obligation, beginning of period	$ 39,390	$ 38,748
Service cost	2,791	3,375
Interest cost	744	812
Plan amendments		(1,661)
Participant contributions	965	1,110
Benefits (paid) received	(1,279)	(3,959)
Actuarial (gain) loss on obligation	1,520	(867)
Currency translation adjustment	(1,556)	1,832
Projected benefit obligation, end of period	42,575	39,390
Change in plan assets:
Plan assets at fair value, beginning of period	31,965	30,167
Actual return on plan assets	207	776
Employer contributions	1,914	2,253
Participant contributions	965	1,110
Benefits (paid) received	(1,279)	(3,959)
Currency translation adjustment	(1,263)	1,617
Plan assets at fair value, end of period	32,509	31,965
Other non-current assets:
Deferred tax asset	2,129	1,570
Other non-current liabilities:
Underfunded pension liability	10,066	7,425
Amounts recognized in accumulated other comprehensive income, net of tax:
Pension adjustment, net of taxes of ($602) for the year ended June 30, 2015 and $387 for the year ended June 30, 2014, respectively	(2,244)	1,443
Accumulated benefit obligation, end of period	$ 38,734	$ 35,581