Organization and Significant Accounting Policies - Fair Value Measurement (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Certificates of Deposit, at Carrying Value	$ 24,800	$ 32,200
Money markets	48,264	60,687
Debt, Long-term and Short-term, Combined Amount	264,784	283,201
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money markets	48,264	60,687
Debt, Long-term and Short-term, Combined Amount	272,347	303,170
Level 1 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money markets	48,264	60,687
Derivative Instruments in Hedges, Assets, at Fair Value	0	0
Derivative Instruments in Hedges, Liabilities, at Fair Value	0	0
Debt, Long-term and Short-term, Combined Amount	0	0
Level 2 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money markets	0	0
Derivative Instruments in Hedges, Assets, at Fair Value	0
Derivative Instruments in Hedges, Liabilities, at Fair Value	(20,287)	0
Debt, Long-term and Short-term, Combined Amount	272,347	303,170
Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money markets	0	0
Derivative Instruments in Hedges, Assets, at Fair Value	0	0
Derivative Instruments in Hedges, Liabilities, at Fair Value	0	0
Debt, Long-term and Short-term, Combined Amount	$ 0	0
Foreign Exchange Forward [Member] | Prepaid Expenses and Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value		$ 5,141