Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (183,314)	$ 9,694	$ 67,430
Pre-tax amount
Foreign currency translation adjustments	(41,180)	11,497	(22,951)
Change in deferred gains (losses) on cash flow hedging instruments	83	(82)	(411)
Change in unrealized (losses) gains on equity investment	0	(190)	(53)
Total other comprehensive (loss) income	(41,097)	11,225	(23,415)
Tax (expense) benefit
Foreign currency translation adjustments	0	0	0
Change in deferred gains (losses) on cash flow hedging instruments	(15)	15	32
Change in unrealized (losses) gains on equity investment	0	(1)	15
Total other comprehensive (loss) income	(15)	14	47
After-tax amount
Foreign currency translation adjustments	(41,180)	11,497	(22,951)
Change in deferred gains (losses) on cash flow hedging instruments	68	(67)	(379)
Change in unrealized (losses) gains on equity investment	0	(191)	(38)
Total other comprehensive (loss) income	(41,112)	11,239	(23,368)
Total comprehensive (loss) income	$ (224,426)	$ 20,933	$ 44,062