The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Derivative Instruments (Details) - USD ($)	12 Months Ended
Derivative Instruments (Details) - USD ($)	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Summary of the effect of derivative instruments on the consolidated statements of income
Income tax expense	$ 0
Income tax expense		$ 77,000	$ 439,000
Designated Derivative Contracts \| Derivatives designated as cash flow hedges
Summary of the effect of derivative instruments on the consolidated statements of income
Gain (loss) recognized in OCI	1,516,000
Gain (loss) recognized in OCI		8,355,000	(9,593,000)
Gain (loss) reclassified from AOCL into net sales	1,516,000
Gain (loss) reclassified from AOCL into net sales		8,675,000	(8,541,000)
Gain excluded from effectiveness testing recognized in SG&A expenses		1,918,000	1,376,000
Non-Designated Derivative Contracts \| Foreign Exchange Contract
Summary of the effect of derivative instruments on the consolidated statements of income
Gain (loss) recognized in SG&A expenses	328,000	1,393,000	$ (2,574,000)
Fair Value, Measurements, Recurring \| Foreign Exchange Contract
Foreign currency exchange contracts and hedging
Notional value	0	0
Fair Value, Measurements, Recurring \| Settled Foreign Exchange Contract
Foreign currency exchange contracts and hedging
Notional value	114,820,000	164,914,000
Fair Value, Measurements, Recurring \| Designated Derivative Contracts \| Derivatives designated as cash flow hedges \| Settled Foreign Exchange Contract
Foreign currency exchange contracts and hedging
Notional value	65,569,000	126,332,000
Fair Value, Measurements, Recurring \| Designated Derivative Contracts \| Derivatives designated as cash flow hedges \| Settled Foreign Exchange Contract Entered In Prior Fiscal Year
Foreign currency exchange contracts and hedging
Notional value		126,332,000
Fair Value, Measurements, Recurring \| Non-Designated Derivative Contracts \| Settled Foreign Exchange Contract
Foreign currency exchange contracts and hedging
Notional value	$ 49,251,000	38,582,000
Fair Value, Measurements, Recurring \| Non-Designated Derivative Contracts \| Settled Foreign Exchange Contract Entered In Prior Fiscal Year
Foreign currency exchange contracts and hedging
Notional value		$ 4,803,000