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Net (Loss) Income Per Share (Tables) | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Net (Loss) Income Per Share | The following tables set forth the computation of the Company’s basic and diluted net (loss) income per share (in thousands, except shares and per share data):
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income attributable to CareDx, Inc. used to compute basic net loss per share |  | $ | (39,469 | ) |  | $ | (13,707 | ) |  | $ | 781 |
Add: interest expense related to subordinated convertible note |  |  | — |  |  |  | — |  |  |  | 364 |
Less: gain on change in fair value of derivative related to subordinated convertible note |  |  | — |  |  |  | — |  |  |  | (118 | )
Less: gain on extinguishment of derivative related to subordinated convertible note |  |  | — |  |  |  | — |  |  |  | (120 | )
Net (loss) income attributable to CareDx, Inc. used to compute diluted net loss per share |  | $ | (39,469 | ) |  | $ | (13,707 | ) |  | $ | 907 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares used to compute basic net (loss) income per share attributable to CareDx, Inc. |  |  | 16,496,911 |  |  |  | 11,860,885 |  |  |  | 5,815,928 |
Effect of potentially dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Convertible preferred stock |  |  | — |  |  |  | — |  |  |  | — |
Convertible preferred stock |  |  | — |  |  |  | — |  |  |  | 2,972,051 |
Subordinated convertible note |  |  | — |  |  |  | — |  |  |  | 134,341 |
Employee stock options |  |  | — |  |  |  | — |  |  |  | 360,681 |
Weighted-average shares used to compute diluted net (loss) income per share attributable to CareDx, Inc. |  |  | 16,496,911 |  |  |  | 11,860,885 |  |  |  | 9,283,001 |
Net (loss) income per share attributable to CareDx, Inc.: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (2.39 | ) |  | $ | (1.16 | ) |  | $ | 0.13 |
Diluted |  | $ | (2.39 | ) |  | $ | (1.16 | ) |  | $ | 0.10 |
Potentially Dilutive Securities Excluded from Diluted Net (Loss) Income Per Share | The following potentially dilutive securities have been excluded from diluted net (loss) income per share, because their effect would be antidilutive:
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Shares of common stock subject to outstanding options |  |  | 1,757,309 |  |  |  | 1,577,317 |  |  |  | 539,645 |
Shares of common stock subject to outstanding common stock warrants |  |  | 3,259,926 |  |  |  | 301,069 |  |  |  | 213,677 |
Restricted stock units |  |  | 306,245 |  |  |  | 106,200 |  |  |  | — |
Total common stock equivalents |  |  | 5,323,480 |  |  |  | 1,984,586 |  |  |  | 753,322 |

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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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