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Net Income Per Share | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Net Income Per Share | Net Income Per Share The computations for basic and diluted net income per share are as follows:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
| (in thousands, except per share data)
Numerator: |  |  |  |  |  |  |
Net income | $ | 8,452 |  |  | $ | 4,996 |  |  | $ | 37,584 |  |  | $ | 13,317 |
Denominator: |  |  |  |  |  |  |
Weighted-average shares used in computing net income per share: |  |  |  |  |  |  |
Basic | 37,703 |  |  | 35,477 |  |  | 37,162 |  |  | 35,074 |
Effect of potentially dilutive securities: |  |  |  |  |  |  |
Common stock options | 2,199 |  |  | 3,103 |  |  | 2,161 |  |  | 3,089 |
Restricted stock units | 397 |  |  | 132 |  |  | 278 |  |  | 42 |
Diluted | 40,299 |  |  | 38,712 |  |  | 39,601 |  |  | 38,205 |
Net income per share: |  |  |  |  |  |  |
Basic | $ | 0.22 |  |  | $ | 0.14 |  |  | $ | 1.01 |  |  | $ | 0.38 |
Diluted | $ | 0.21 |  |  | $ | 0.13 |  |  | $ | 0.95 |  |  | $ | 0.35 |
Potentially dilutive securities not included in the calculation of diluted net income per share because doing so would be antidilutive are as follows:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
| (in thousands)
Common stock options | 651 |  |  | 2,881 |  |  | 1,244 |  |  | 3,594 |
Restricted stock units | — |  |  | — |  |  | — |  |  | 38 |
| 651 |  |  | 2,881 |  |  | 1,244 |  |  | 3,632 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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