Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2015		Dec. 31, 2014
Change in Accounting Estimate [Line Items]
Share-based compensation expense		$ 6,066		$ 6,384	$ 12,256		$ 12,126
Proceeds from Insurance Settlement		3,519			9,711
Gain on proceeds from insurance		$ (1,549)			$ (3,136)		$ 0
Reconciliation of weighted-average number of ordinary shares
Weighted average shares outstanding, basic		31,326,141		32,536,046	31,927,362		32,461,432
Weighted average shares issuable upon exercise/vesting of outstanding share options/RSUs/RSAs		1,097,172		1,045,054	1,051,698		906,335
Shares used in computing diluted net income per share		32,423,313		33,581,100	32,979,060		33,367,767
Weighted average anti-dilutive shares excluded from diluted net income per share		20,703		35,244	50,340		550,571
Other Income and Expenses [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		$ 3,186	[1]	$ 4,191	$ 5,553	[1]	$ 7,642
Foreign Currency Transaction Gain (Loss), Realized	[2]	2,473		5,664	7,507		14,349
Other Nonoperating Gains (Losses)	[3]	2,031		0	3,872		0
Other income, net		$ 7,690		$ 9,855	$ 16,932		$ 21,991

[1] Includes both realized and unrealized gains (losses) on derivative instruments.

[2] We have significant non-functional currency intercompany financing relationships subject to currency exchange rate volatility and the net currency related gains for the three and six months ended December 31, 2015 and 2014 are primarily driven by this intercompany activity.

[3] Includes a gain of $1,549 and $3,136 for the three and six months ended December 31, 2015, respectively, related to insurance proceeds received for an insurance claim resulting from a fire at our Venlo, Netherlands production facility.