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SHORT-TERM INVESTMENTS
 6 Months Ended
Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]  
SHORT-TERM INVESTMENTS SHORT-TERM INVESTMENTS
Our Short-term investments consisted of the following:
 
September 30, 2019
 
 
 
Gross
Unrealized
 
 
 
Cost or
Amortized Cost
 
Gains
 
Losses
 
Fair Value
Short-term investments
 

 
 

 
 

 
 

Bank time deposits
$
381,000

 
$
—

 
$
—

 
$
381,000

Available-for-sale securities:
 

 
 

 
 

 
 

Corporate bonds
272,758

 
1,286

 
(17
)
 
274,027

US Treasuries
28,898

 
43

 
—

 
28,941

Commercial paper
58,645

 
—

 
—

 
58,645

Total Short-term investments
$
741,301

 
$
1,329

 
$
(17
)
 
$
742,613

 
 
March 31, 2019
 
 
 
Gross
Unrealized
 
 
 
Cost or
Amortized Cost
 
Gains
 
Losses
 
Fair Value
Short-term investments
 

 
 

 
 

 
 

Bank time deposits
$
387,720

 
$
—

 
$
—

 
$
387,720

Available-for-sale securities:
 

 
 

 
 

 
 

Corporate bonds
295,526

 
742

 
(127
)
 
296,141

US Treasuries
55,656

 
27

 
(49
)
 
55,634

Commercial paper
4,990

 


 


 
4,990

Total short-term investments
$
743,892

 
$
769

 
$
(176
)
 
$
744,485


Based on our review of investments with unrealized losses, we did not consider these investments to be other-than-temporarily impaired as of September 30, 2019 or March 31, 2019. We do not intend to sell any of our investments with unrealized losses, nor is it more likely than not that we will be required to sell those investments.
The following table summarizes the contracted maturities of our short-term investments at September 30, 2019:
 
September 30, 2019
 
Amortized
Cost
 
Fair
Value
Short-term investments
 

 
 

Due in 1 year or less
$
637,405

 
$
638,236

Due in 1 - 2 years
103,896

 
104,377

Total short-term investments
$
741,301

 
$
742,613