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INVESTMENT SECURITIES (Tables)
 6 Months Ended
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Value of Securities
The amortized cost and gross unrealized gains (losses) of marketable investment securities accounted under the fair value method were as follows:
September 30, 2022
Amortized CostGross Unrealized GainsGross Unrealized (Losses)
Fair Value (1)
Corporate debt securities$21,910 $— $(1,810)$20,100 
U.S. treasury securities13,196 — (652)12,544 
Certificates of Deposit517 — — 517 
Total securities with unrealized gains/(losses)$35,623 $— $(2,462)$33,161 
(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 $2 $(1,403)$87,074 
U.S. treasury securities17,891 — (229)17,662 
Certificates of Deposit516 — — 516 
Total securities with unrealized gains/(losses)$106,882 $2 $(1,632)$105,252 
(1) Included within Investment securities in the Consolidated Balance Sheets.
Schedule of Maturities of Debt Securities
Scheduled maturities of the debt securities held by the Company included within the investment securities portfolio were as follows:
September 30, 2022March 31, 2022
Amortized CostEstimated Fair ValueAmortized CostEstimated Fair Value
Due within one year$4,886 $4,809 $72,963 $72,950 
Due within years two through five30,737 28,352 33,919 32,302 
Total debt within the investment securities portfolio$35,623 $33,161 $106,882 $105,252