Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning balance (in shares) at Jun. 30, 2017		25,431,845
Beginning balance, amount at Jun. 30, 2017	$ 837,145	$ 61,169	$ 849,180	$ (73,204)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	33,153		33,153
Unrealized (loss) gain on hedged transaction, net of tax	1,089			1,089
Foreign currency translation adjustment	(12,062)			(12,062)
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes (in shares)		161,277
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes	636	$ 636
Share based compensation	6,415	$ 6,415
Ending Balance (in shares) at Jun. 30, 2018		25,593,122
Ending balance, amount at Jun. 30, 2018	866,376	$ 68,220	882,333	(84,177)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	57,597		57,597
Unrealized (loss) gain on hedged transaction, net of tax	(3,277)			(3,277)
Foreign currency translation adjustment	(2,634)			(2,634)
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes (in shares)		139,107
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes	103	$ 103
Common stock repurchased (in shares)		(323,832)
Common stock repurchased	(10,129)	$ (10,129)	0	0
Share based compensation	6,093	$ 6,093
Ending Balance (in shares) at Jun. 30, 2019		25,408,397
Ending balance, amount at Jun. 30, 2019	914,129	$ 64,287	939,930	(90,088)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(192,654)		(192,654)
Unrealized (loss) gain on hedged transaction, net of tax	(4,646)			(4,646)
Foreign currency translation adjustment	(38,061)			(38,061)
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes (in shares)		120,969
Exercise of stock options and shares issued under share-based compensation plans, net of shares withheld for employee taxes	(599)	$ (599)
Common stock repurchased (in shares)		(168,068)
Common stock repurchased	(5,432)	$ (5,432)
Share based compensation	5,509	$ 5,509
Ending Balance (in shares) at Jun. 30, 2020		25,361,298
Ending balance, amount at Jun. 30, 2020	$ 678,246	$ 63,765	$ 747,276	$ (132,795)