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Net Income Per Share | 6 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Net Income Per Share | Net Income Per Share The computations of basic and diluted net income per share for the Company were as follows (in thousands, except per share amounts):
|  | Three Months Ended September 30, |  | Six Months Ended September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Net income |  | $ | 64,176 |  |  | $ | 56,358 |  |  | $ | 102,642 |  |  | $ | 93,365 |
Shares used in net income per share computation: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding - basic |  | 165,630 |  |  | 164,120 |  |  | 165,474 |  |  | 163,765 |
Effect of potentially dilutive equivalent shares |  | 3,604 |  |  | 4,958 |  |  | 3,522 |  |  | 4,945 |
Weighted average shares outstanding - diluted |  | 169,234 |  |  | 169,078 |  |  | 168,996 |  |  | 168,710 |
Net income per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.39 |  |  | $ | 0.34 |  |  | $ | 0.62 |  |  | $ | 0.57 |
Diluted |  | $ | 0.38 |  |  | $ | 0.33 |  |  | $ | 0.61 |  |  | $ | 0.55 |
Share equivalents attributable to outstanding stock options, restricted stock units ("RSUs") and ESPP totaling 0.8 million and 0.6 million for the three months ended September 30, 2018 and 2017, respectively, and 1.2 million and 1.2 million for the six months ended September 30, 2018 and 2017, respectively, were excluded from the calculation of diluted net income per share because the combined exercise price and average unamortized grant date fair value upon exercise of these options and ESPP or vesting of RSUs were greater than the average market price of the Company's shares during the periods presented herein, and therefore their inclusion would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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