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INVESTMENT SECURITIES
9 Months Ended
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
INVESTMENT SECURITIES Investment Securities
The amortized cost and gross unrealized gains (losses) of marketable investment securities accounted under the fair value method were as follows:
December 31, 2022
Amortized CostGross Unrealized GainsGross Unrealized (Losses)
Fair Value (1)
Corporate debt securities$21,923 $— $(1,613)$20,310 
U.S. treasury securities13,296 — (579)12,717 
Common stock3,045 211 (344)2,912 
Certificates of deposit517 — — 517 
Total securities with unrealized gains/(losses)$38,781 $211 $(2,536)$36,456 
(1) Included within Investment securities in the Consolidated Balance Sheets.

March 31, 2022
Amortized CostGross Unrealized GainsGross Unrealized (Losses)
Fair Value (1)
Corporate debt securities$88,475 $$(1,403)$87,074 
U.S. treasury securities17,891 — (229)17,662 
Certificates of deposit516 — — 516 
Total securities with unrealized gains/(losses)$106,882 $$(1,632)$105,252 
(1) Included within Investment securities in the Consolidated Balance Sheets.

Scheduled maturities of the debt securities held by the Company included within the investment securities portfolio were as follows:
December 31, 2022March 31, 2022
Amortized CostEstimated Fair ValueAmortized CostEstimated Fair Value
Due within one year$4,924 $4,866 $72,963 $72,950 
Due within years two through five33,857 31,590 33,919 32,302 
Total debt within the investment securities portfolio$38,781 $36,456 $106,882 $105,252