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Short-term investments (Tables) | 12 Months Ended
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Mar. 31, 2021
Short-term investments |
Schedule of short-term investments |
|  | March 31, 2021
|  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  |  |
|  | cost |  | gains |  | losses |  | Fair value
US Government agency bonds |  | $ | 67,017 |  | $ | 12 |  | $ | (17) |  | $ | 67,012
US Treasury bonds |  |  | 226,722 |  |  | 55 |  |  | (5) |  |  | 226,772
|  | $ | 293,739 |  | $ | 67 |  | $ | (22) |  | $ | 293,784
|  | March 31, 2020
|  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  |  |
|  | cost |  | gains |  | losses |  | Fair value
Commercial paper |  | $ | 21,818 |  | $ | 66 |  | $ | — |  | $ | 21,884
US Government agency bonds |  |  | 15,217 |  |  | 78 |  |  | — |  |  | 15,295
US Treasury bonds |  |  | 35,590 |  |  | 220 |  |  | — |  |  | 35,810
Corporate debt securities |  |  | 36,107 |  |  | 24 |  |  | (65) |  |  | 36,066
|  | $ | 108,732 |  | $ | 388 |  | $ | (65) |  | $ | 109,055

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- Definition Tabular disclosure of investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -URI http://asc.fasb.org/topic&trid=2197064 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -URI http://asc.fasb.org/topic&trid=75115024 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
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- References No definition available. + Details
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