Foreign Currency Exchange Contracts and Hedging (Narrative) (Details) $ in Thousands		3 Months Ended
	Aug. 09, 2016 USD ($) counterparty	Jun. 30, 2016 USD ($) counterparty	Jun. 30, 2015 USD ($)
Foreign currency exchange contracts and hedging
Number of counterparties in derivative contracts | counterparty		1
Remaining maturity of foreign currency derivatives (in months)		9 months
Derivatives designated as cash flow hedges | Foreign currency exchange contracts
Summary of the effect of derivative instruments on the consolidated statements of income
Amount of gain (loss) recognized in other comprehensive income on derivatives (effective portion)		$ 4,464	$ (2,353)
Amount of loss reclassified from accumulated other comprehensive income into income (effective portion)		(175)	0
Amount of gain excluded from effectiveness testing		192	52
Designated as hedging instrument | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Derivative notional amount		$ 112,000
Number of counterparties in derivative contracts | counterparty		7
Derivative, settled during period, notional amount		$ 3,000
Non-designated derivatives | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Derivative notional amount		15,000
Derivative, entered into and settled during period, notional amount		63,000
Summary of the effect of derivative instruments on the consolidated statements of income
Amount of (loss) gain recognized in income on derivatives		$ (591)	$ 865
Non-designated derivatives | Foreign currency exchange contracts | Subsequent event
Foreign currency exchange contracts and hedging
Derivative notional amount	$ 77,000
Number of counterparties in derivative contracts | counterparty	8
Remaining maturity of foreign currency derivatives (in months)	6 months