Derivatives - Balance Sheet Classification and Fair Value of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Mar. 31, 2019
Other Noncurrent Assets \| Currency Swap
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Liability	$ 0	$ 0
Derivative Asset, Fair Value, Gross Asset	0	4,577
Prepaid Expenses and Other Current Assets \| Foreign Exchange Forward
Derivative [Line Items]
Derivative Asset	0	564
Derivative Asset, Fair Value, Gross Liability	567	645
Derivative Asset, Fair Value, Gross Asset	567	1,209
Other Noncurrent Liabilities \| Currency Swap
Derivative [Line Items]
Derivative Liability		0
Derivative Liability, Fair Value, Gross Liability	5,319	0
Derivative Liability, Fair Value, Gross Asset	0	0
Accrued Liabilities \| Foreign Exchange Forward
Derivative [Line Items]
Derivative Liability	1,272	0
Derivative Liability, Fair Value, Gross Liability	1,839	645
Derivative Liability, Fair Value, Gross Asset	$ 567	$ 645

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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