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Investments - Contractual Maturities of Available-For-Sale Debt Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]    
Due within one year $ 157,948  
Due in one year to three years 530,042  
Fair Value $ 687,990 $ 93,086