Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 518,047	$ 368,764	$ 368,698
FruitSmart, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value contingent consideration liability		$ 6,700
Change in contingent consideration liability	(4,200)
Nonrecurring fair value measurements [Member] | UNITED STATES
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired fixed assets	$ 6,000
Nonrecurring fair value measurements [Member] | TANZANIA, UNITED REPUBLIC OF
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired fixed assets				$ 17,000