Foreign Currency Exchange Contracts and Hedging (Details)	2 Months Ended	12 Months Ended
	May 25, 2018 USD ($) counterparty	Mar. 31, 2018 USD ($) counterparty	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
Foreign currency exchange contracts and hedging
Gain (loss) reclassification from AOCI to income, estimate of time to transfer		15 months
Derivatives designated as cash flow hedges
Summary of the effect of derivative instruments on the consolidated statements of income
Amount of (loss) gain reclassified from accumulated other comprehensive loss into income (effective portion)		$ (8,541,000)	$ 7,082,000	$ (1,592,000)
Amount of gain excluded from effectiveness testing		1,376,000	534,000	207,000
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 (loss) gain recognized in other comprehensive income (loss) on derivative instruments (effective portion)		$ (9,593,000)	8,208,000	(850,000)
Designated as Hedging Instrument | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Number of counterparties in derivative contracts | counterparty		5
Maximum remaining maturity of foreign currency derivatives		12 months
Derivative entered into and settled during period		$ 21,000,000	11,000,000
Derivative, settled during period, notional amount		$ 100,000,000
Not Designated as Hedging Instrument | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Number of counterparties in derivative contracts | counterparty		2
Maximum remaining maturity of foreign currency derivatives		12 months
Derivative entered into and settled during period		$ 81,000,000	263,000,000
Summary of the effect of derivative instruments on the consolidated statements of income
Amount of (loss) gain recognized in income on derivative instruments		(2,574,000)	2,202,000	$ (1,532,000)
Subsequent Event | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Number of counterparties in derivative contracts | counterparty	5
Subsequent Event | Designated as Hedging Instrument | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Notional value	$ 0
Subsequent Event | Not Designated as Hedging Instrument | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Maximum remaining maturity of foreign currency derivatives	9 months
Subsequent Event | Not Designated as Hedging Instrument | Derivatives designated as cash flow hedges | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Notional value	$ 14,000,000
Fair Value, Measurements, Recurring
Foreign currency exchange contracts and hedging
Fair value recorded in other current assets		950,000	1,365,000
Fair value recorded in other accrued expenses		(153,000)
Fair Value, Measurements, Recurring | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Notional value		131,134,000	100,000,000
Fair Value, Measurements, Recurring | Designated as Hedging Instrument
Foreign currency exchange contracts and hedging
Fair value recorded in other current assets		950,000	1,365,000
Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Derivatives designated as cash flow hedges
Foreign currency exchange contracts and hedging
Fair value recorded in other accrued expenses		(143,000)
Fair Value, Measurements, Recurring | Designated as Hedging Instrument | Derivatives designated as cash flow hedges | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Notional value		126,332,000	100,000,000
Fair value recorded in other current assets		950,000	1,365,000
Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument
Foreign currency exchange contracts and hedging
Fair value recorded in other current assets		0	0
Fair value recorded in other accrued expenses		(10,000)
Fair Value, Measurements, Recurring | Not Designated as Hedging Instrument | Foreign currency exchange contracts
Foreign currency exchange contracts and hedging
Notional value		$ 4,802,000	$ 0