Marketable Securities and Other Investments (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024
Gain (Loss) on Securities [Line Items]
Unrealized gain (loss) on investments	$ 234	$ (349)	$ 236	$ (270)
Net realized gains on sale of marketable securities	57	$ 0	57	0
Proceeds from equity method investment				247
Dividend received from equity method investment			0	$ 144
Accounts receivable balance	170,669		170,669		$ 171,186
Related Party \| EMC
Gain (Loss) on Securities [Line Items]
Accounts receivable balance	$ 12,700		$ 12,700		10,300
EMC
Gain (Loss) on Securities [Line Items]
Ownership interest	49.00%	49.00%	49.00%	49.00%
Carrying values of investments	$ 3,847		$ 3,847		$ 3,377
Investment income	$ 236	$ 183	$ 362	$ 559

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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