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Net Income (Loss) per Share (Tables) | 12 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Schedule of computations of basic and diluted net income (loss) per share | The computations of basic and diluted net income (loss) per share for the Company were as follows (in thousands except per share amounts):
|  | Years Ended March 31,
|  | 2018 |  | 2017 |  | 2016
Net Income (loss): |  |  |  |  |  |
Continuing operations |  | $ | 208,542 |  |  | $ | 205,876 |  |  | $ | 128,362 |
Discontinued operations |  | — |  |  | — |  |  | (9,045 | )
Net income |  | $ | 208,542 |  |  | $ | 205,876 |  |  | $ | 119,317 |
Shares used in net income (loss) per share computation: |  |  |  |  |  |
Weighted average shares outstanding - basic |  | 164,038 |  |  | 162,058 |  |  | 163,296 |
Effect of potentially dilutive equivalent shares |  | 4,933 |  |  | 3,482 |  |  | 2,496 |
Weighted average shares outstanding - diluted |  | 168,971 |  |  | 165,540 |  |  | 165,792 |
Net income (loss) per share - basic: |  |  |  |  |  |
Continuing operations |  | $ | 1.27 |  |  | $ | 1.27 |  |  | $ | 0.79 |
Discontinued operations |  | $ | — |  |  | $ | — |  |  | $ | (0.06 | )
Net income per share - basic |  | $ | 1.27 |  |  | $ | 1.27 |  |  | $ | 0.73 |
Net income (loss) per share - diluted: |  |  |  |  |  |
Continuing operations |  | $ | 1.23 |  |  | $ | 1.24 |  |  | $ | 0.77 |
Discontinued operations |  | $ | — |  |  | $ | — |  |  | $ | (0.05 | )
Net income per share - diluted |  | $ | 1.23 |  |  | $ | 1.24 |  |  | $ | 0.72 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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