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SHORT-TERM INVESTMENTS
 9 Months Ended
Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]  
SHORT-TERM INVESTMENTS SHORT-TERM INVESTMENTS
Our Short-term investments consisted of the following:
 December 31, 2020
  Gross
Unrealized		 
 Cost or
Amortized Cost		GainsLossesFair Value
Short-term investments    
Bank time deposits$118,000 $— $— $118,000 
Available-for-sale securities:    
Corporate bonds508,431 1,617 (99)509,949 
US Treasuries 44,948 94 (1)45,041 
Asset-backed securities697 2 — 699 
Commercial paper98,994 — — 98,994 
Total Short-term investments$771,070 $1,713 $(100)$772,683 
 
 March 31, 2020
  Gross
Unrealized
 Cost or
Amortized Cost		GainsLossesFair Value
Short-term investments    
Bank time deposits$191,000 $— $— $191,000 
Available-for-sale securities:    
Corporate bonds337,752 307 (3,428)334,631 
US Treasuries30,481 338 — 30,819 
Commercial paper87,553 — — 87,553 
Total Short-term investments$646,786 $645 $(3,428)$644,003 
The following table summarizes the contracted maturities of our short-term investments at December 31, 2020:
 December 31, 2020
 Amortized
Cost		Fair
Value
Short-term investments  
Due in 1 year or less$573,013 $574,084 
Due in 1 - 2 years197,361 197,900 
Due in 2 - 3 years696 699 
Total Short-term investments$771,070 $772,683