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Earnings Per Share | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Note 3—Earnings Per Share The Company has two classes of common stock, Class A and Class B. Basic and diluted earnings per share (“EPS”) attributable to common stockholders for Class A and Class B common stock were the same because they were entitled to the same liquidation and dividend rights. The computation of basic and diluted EPS is as follows (in thousands, except per share amounts):
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 20,292 |  |  | $ | 10,229 |  |  | $ | 48,705 |  |  | $ | 33,987 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares outstanding—basic |  |  | 42,721 |  |  |  | 40,700 |  |  |  | 42,178 |  |  |  | 39,977 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options to purchase common stock |  |  | 3,239 |  |  |  | 3,078 |  |  |  | 2,780 |  |  |  | 3,593 |
Employee stock purchase plan shares |  |  | 270 |  |  |  | 322 |  |  |  | 273 |  |  |  | 250 |
Restricted stock |  |  | 346 |  |  |  | 145 |  |  |  | 229 |  |  |  | 99 |
Weighted-average shares outstanding—diluted |  |  | 46,576 |  |  |  | 44,245 |  |  |  | 45,460 |  |  |  | 43,919 |
Basic EPS |  | $ | 0.47 |  |  | $ | 0.25 |  |  | $ | 1.15 |  |  | $ | 0.85 |
Diluted EPS |  | $ | 0.44 |  |  | $ | 0.23 |  |  | $ | 1.07 |  |  | $ | 0.77 |
Anti-dilutive equity awards under stock-based award plans excluded from the determination of diluted EPS |  |  | 167 |  |  |  | 899 |  |  |  | 167 |  |  |  | 899 |

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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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