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Net Loss Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Schedule Of Computation Of Basic And Diluted Net Income Per Share | The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts):
| Year Ended December 31,
| 2015 |  | 2016 |  | 2017
Basic: |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |
Net income | $ | 3,964 |  |  | $ | 304 |  |  | $ | 25,426 |
Denominator: |  |  |  |  |
Net weighted-average number of common stock shares outstanding | 18,008 |  |  | 18,272 |  |  | 18,512 |
Net income per share—basic: | $ | 0.22 |  |  | $ | 0.02 |  |  | $ | 1.37 |
Diluted: |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |
Net income | $ | 3,964 |  |  | $ | 304 |  |  | $ | 25,426 |
Denominator: |  |  |  |  |  |  |  |
Net weighted average number of common stock shares outstanding | 18,008 |  |  | 18,272 |  |  | 18,512 |
Dilutive effect of common stock | 78 |  |  | 42 |  |  | 535 |
Total common stock shares used in per share calculation | 18,086 |  |  | 18,314 |  |  | 19,047 |
Net income per share—diluted | $ | 0.22 |  |  | $ | 0.02 |  |  | $ | 1.33 |
Schedule Of Anti-dilutive Shares Excluded From Computation Of Net Income Per Share | The number of outstanding anti-dilutive shares that were excluded from the computation of diluted net income per share consisted of the following (in thousands):
| Year Ended December 31,
| 2015 |  | 2016 |  | 2017
Common stock options | 1,484 |  |  | 1,222 |  |  | 908 |
Restricted stock units | 866 |  |  | 768 |  |  | 1,296 |
Total | 2,350 |  |  | 1,990 |  |  | 2,204 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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