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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Schedule of Estimated Useful Life of Assets | Depreciation is calculated on a straight-line basis over the following estimated useful lives of the assets:
Equipment, Furniture and Software | 3-7 years
Leasehold Improvements | Shorter of asset life or lease term
ASC 606 [Member] |
Summary of Result of Adopting ASC 606 on Financial Statement | Impact of Adoption As a result of adopting ASC 606 on January 1, 2018, the Company has revised its comparative financial statements for the prior year as if ASC 606 had been effective for that period. As a result, the following financial statement line items were affected as of December 31, 2017 and for the years ended December 31, 2017 and 2016.
Consolidated Balance Sheets |
|  | As of December 31, 2017 |
|  | As revised under ASC 606 |  |  | As originally reported under ASC 605 |  |  | Effect of change |
|  | (in thousands) |
Current portion of deferred revenue |  | $ | 1,275 |  |  | $ | 2,705 |  |  | $ | (1,430 | )
Deferred revenue, net of current portion |  |  | 7,241 |  |  |  | 5,607 |  |  |  | 1,634 |
Accumulated deficit |  |  | (192,716 | ) |  |  | (192,512 | ) |  |  | (204 | )
Consolidated Statements of Operations and Comprehensive Loss |
|  | For the Year Ended December 31, 2017 |
|  | As revised under ASC 606 |  |  | As originally reported under ASC 605 |  |  | Effect of change |
|  | (in thousands, except per share data) |
Revenue |  | $ | 3,893 |  |  | $ | 3,704 |  |  | $ | 189 |
Loss from operations |  |  | (102,391 | ) |  |  | (102,580 | ) |  |  | 189 |
Income tax benefit (provision) |  |  | (842 | ) |  |  | (708 | ) |  |  | (134 | )
Net loss |  |  | (101,980 | ) |  |  | (102,035 | ) |  |  | 55 |
|  | For the Year Ended December 31, 2016 |
|  | As revised under ASC 606 |  |  | As originally reported under ASC 605 |  |  | Effect of change |
|  | (in thousands, except per share data) |
Revenue |  | $ | 1,092 |  |  | $ | 1,485 |  |  | $ | (393 | )
Loss from operations |  |  | (55,720 | ) |  |  | (55,327 | ) |  |  | (393 | )
Income tax benefit (provision) |  |  | (482 | ) |  |  | (616 | ) |  |  | 134 |
Net loss |  |  | (55,660 | ) |  |  | (55,401 | ) |  |  | (259 | )
Net loss per share attributable to ordinary shareholders—basic and diluted |  | $ | (2.44 | ) |  | $ | (2.43 | ) |  | $ | (0.01 | )
Consolidated Statement of Cash Flows |
|  | For the Year Ended December 31, 2017 |
|  | As revised under ASC 606 |  |  | As originally reported under ASC 605 |  |  | Effect of change |
|  | (in thousands) |
Net loss |  | $ | (101,980 | ) |  | $ | (102,035 | ) |  | $ | 55 |
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |  |  |  |  |  |  |  |  |  |  |
Deferred income taxes |  |  | 908 |  |  |  | 774 |  |  |  | 134 |
Changes in operating assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Deferred revenue |  |  | (2,893 | ) |  |  | (2,704 | ) |  |  | (189 | )
|  | For the Year Ended December 31, 2016 |
|  | As revised under ASC 606 |  |  | As originally reported under ASC 605 |  |  | Effect of change |
|  | (in thousands) |
Net loss |  | $ | (55,660 | ) |  | $ | (55,401 | ) |  | $ | (259 | )
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |  |  |  |  |  |  |  |  |  |  |
Deferred income taxes |  |  | (698 | ) |  |  | (564 | ) |  |  | (134 | )
Changes in operating assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Deferred revenue |  |  | 11,408 |  |  |  | 11,015 |  |  |  | 393 |

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