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FAIR VALUE MEASUREMENTS AND DISCLOSURES (Tables) | 12 Months Ended
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Mar. 31, 2017
Fair Value Disclosures [Abstract] |
Schedule of Fair Value Other Financial Instruments Measured | The following table provides the fair value hierarchy for the company’s other financial instruments measured as of March 31, 2017:
(In thousands) |  | Total |  |  | Quoted prices in active markets (Level 1) |  |  | Significant observable inputs (Level 2) |  |  | Significant unobservable inputs (Level 3) |
Money market cash equivalents |  | $ | 664,412 |  |  |  | 664,412 |  |  |  | — |  |  |  | — |
Total fair value of assets |  | $ | 664,412 |  |  |  | 664,412 |  |  |  | — |  |  |  | — |
The following table provides the fair value hierarchy for the company’s other financial instruments measured as of March 31, 2016:
(In thousands) |  | Total |  |  | Quoted prices in active markets (Level 1) |  |  | Significant observable inputs (Level 2) |  |  | Significant unobservable inputs (Level 3) |
Money market cash equivalents |  | $ | 643,770 |  |  |  | 643,770 |  |  |  | — |  |  |  | — |
Total fair value of assets |  | $ | 643,770 |  |  |  | 643,770 |  |  |  | — |  |  |  | — |

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