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Summary Of Significant Accounting Policies - (Tables) | 9 Months Ended
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Sep. 30, 2019
Accounting Policies [Abstract] |
Schedule of Concentration of Risk, by Risk Factor and Significant Payer | For each significant payer, revenue as a percentage of total revenue and accounts receivable as a percentage of total accounts receivable are as follows:
|  | Revenue |  |  |  |  |  |
|  | Three Months Ended September 30, |  |  |  | Nine Months Ended September 30, |  |
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Medicare |  | 25 | % |  | 30 | % |  | 26 | % |  | 31 | %
Blue Shield |  | 13 | % |  | 14 | % |  | 13 | % |  | 14 | %
United Healthcare |  | 10 | % |  | 12 | % |  | 10 | % |  | 13 | %
Medicare Advantage |  | 12 | % |  | 12 | % |  | 11 | % |  | 11 | %
|  |  |  | Accounts Receivable |  |
|  |  |  | September 30, 2019 |  | December 31, 2018
Medicare |  |  |  | 23 | % |  | 26 | %
Blue Shield |  |  |  | 16 | % |  | 16 | %
United Healthcare |  |  |  | 9 | % |  | 11 | %
Medicare Advantage |  |  |  | 8 | % |  | 11 | %
Disaggregation of Revenue | The following table includes the Company's revenues as disaggregated by payer category (in thousands):
|  | Three Months Ended September 30, |  |  |  | Nine Months Ended September 30, |  |
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Revenue: |  |  |  |  |  |  |  |
Healthcare insurers |  | $ | 6,188 |  |  | $ | 5,408 |  |  | $ | 17,716 |  |  | $ | 15,023 |
Government |  | 2,665 |  |  | 2,524 |  |  | 7,964 |  |  | 7,013 |
Client |  | 1,007 |  |  | 171 |  |  | 3,200 |  |  | 428 |
Other(1) |  | 148 |  |  | 120 |  |  | 458 |  |  | 335 |
Janssen (SIMPONI®) |  | 431 |  |  | — |  |  | 835 |  |  | — |
Total revenue |  | $ | 10,439 |  |  | $ | 8,223 |  |  | $ | 30,173 |  |  | $ | 22,799 |
(1)Includes patient self-pay that is immaterial.
Schedule of Restricted Cash and Cash Equivalents | Cash, cash equivalents and restricted cash presented in the accompanying condensed statements of cash flows consist of the following (in thousands):
|  |  |  | September 30, 2019 |  | December 31, 2018
Cash and cash equivalents |  |  |  | $ | 77,828 |  |  | $ | 13,164 |
Restricted cash |  |  |  | 100 |  |  | 100 |
|  |  |  | $ | 77,928 |  |  | $ | 13,264 |
Schedule of Cash and Cash Equivalents | Cash, cash equivalents and restricted cash presented in the accompanying condensed statements of cash flows consist of the following (in thousands):
|  |  |  | September 30, 2019 |  | December 31, 2018
Cash and cash equivalents |  |  |  | $ | 77,828 |  |  | $ | 13,164 |
Restricted cash |  |  |  | 100 |  |  | 100 |
|  |  |  | $ | 77,928 |  |  | $ | 13,264 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | Potentially dilutive securities not included in the calculation of diluted net loss per share because to do so would be anti-dilutive are as follows (in common stock equivalent shares):
|  | Three Months Ended September 30, |  |  |  | Nine Months Ended September 30, |  |
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Redeemable convertible preferred stock |  | — |  |  | 5,202,940 |  |  | — |  |  | 5,202,940 |
Warrants to purchase redeemable convertible preferred stock |  | — |  |  | 203,549 |  |  | — |  |  | 203,549 |
Warrants to purchase common stock |  | 461,273 |  |  | 934,789 |  |  | 461,273 |  |  | 934,789 |
Common stock options |  | 1,475,006 |  |  | 69,885 |  |  | 1,475,006 |  |  | 69,885 |
Total |  | 1,936,279 |  |  | 6,411,163 |  |  | 1,936,279 |  |  | 6,411,163 |

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