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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 223,185	$ 147,582	$ 112,818
Other comprehensive income
Change in unrealized gain on available-for-sale-securities, net of tax provision of $1,344, $3,874, and $425, respectively	3,987	11,419	1,211
Comprehensive income	$ 227,172	$ 159,001	$ 114,029

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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