Marketable Securities and Other Investments (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Mar. 31, 2025
Gain (Loss) on Securities [Line Items]
Unrealized gain (loss) on investments	$ 133	$ 234	$ 331	$ 236
Net realized gains (losses) on sale of marketable securities	178	57	178	57
Accounts receivable balance	179,267		179,267		$ 165,481
Related Party \| EMC
Gain (Loss) on Securities [Line Items]
Accounts receivable balance	5,690		5,690		4,250
Amount of transactions	$ 2,560	2,476	$ 4,197	6,597
EMC
Gain (Loss) on Securities [Line Items]
Ownership interest	49.00%		49.00%
Carrying values of investments	$ 5,417		$ 5,417		$ 4,318
Investment income	$ 82	$ 236	$ 733	$ 362

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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