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SHORT-TERM INVESTMENTS (Tables) | 6 Months Ended
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Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract] |
Schedule of 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 |
Summary of the contracted maturities of short-term 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 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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