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INVESTMENT SECURITIES (Tables)
 12 Months Ended
Mar. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Debt Securities, Held-to-maturity
The amortized cost and gross unrealized gains (losses) of marketable investment securities accounted under the fair value method were as follows:
March 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
Corporate debt securities$177,687 $627 $(164)$178,150 
U.S. treasury securities17,044 17 (157)16,904 
Common stock21 — — 21 
Certificates of deposit549 — — 549 
Total securities with unrealized gains/(losses)$195,301 $644 $(321)$195,624 

March 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)
Fair Value
Corporate debt securities$22,318 $8 $(685)$21,641 
U.S. treasury securities16,071 110 (348)15,833 
Certificates of deposit531 — — 531 
Total securities with unrealized gains/(losses)$38,920 $118 $(1,033)$38,005 
Investments Classified by Contractual Maturity Date
Scheduled maturities of the securities held by the Company included within the investment securities portfolio were as follows:
March 31, 2025March 31, 2024
Amortized CostEstimated Fair ValueAmortized CostEstimated Fair Value
Due within one year$166,799 $167,328 $7,592 $7,566 
Due within years two through five28,502 28,296 31,328 30,439 
Total debt within the investment securities portfolio$195,301 $195,624 $38,920 $38,005