Derivative Instruments - Narrative (Details)	3 Months Ended
	Jun. 30, 2019 EUR (€) derivative_instrument
Derivative [Line Items]
Number of instruments entered | derivative_instrument	4
Forward contracts
Derivative [Line Items]
Aggregate notional amount	€ 40,000,000.0
Forward contract maturing 2020
Derivative [Line Items]
Aggregate notional amount	10,000,000.0
Forward contract maturing 2021
Derivative [Line Items]
Aggregate notional amount	10,000,000.0
Forward contract maturing 2022
Derivative [Line Items]
Aggregate notional amount	10,000,000.0
Forward contract maturing 2023
Derivative [Line Items]
Aggregate notional amount	€ 10,000,000.0