v3.19.3.a.u2

Summary of Significant Accounting Policies - Effect of Adoption of ASC 606 on Condensed Consolidated Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | $ 60,209 |  |  |
Loss from operations | $ (130,556) | $ (129,815) | $ (143,709) | $ (141,640) | $ (153,031) | $ (85,818) | $ (97,015) | $ (77,402) | (545,720) | $ (413,266) | $ (269,356) |
Loss before income taxes |  |  |  |  |  |  |  |  | (514,716) | (384,408) | (255,996) |
Net loss |  |  |  |  |  |  |  |  | $ (514,021) | $ (384,734) | $ (255,916) |
Net loss per share - basic and diluted (in dollars per share) | $ (0.37) | $ (0.37) | $ (0.41) | $ (0.40) | $ (1.14) | $ (1.32) | $ (1.43) | $ (1.16) | $ (1.55) | $ (4.95) | $ (4.18) |
Accounts receivable | $ 5,032 |  |  |  | $ 11,686 |  |  |  | $ 5,032 | $ 11,686 |  | $ 8,948
Prepaid expenses and other current assets | 19,403 |  |  |  | 28,399 |  |  |  | 19,403 | 28,399 |  | 28,099
Property and equipment, net |  |  |  |  | 211,977 |  |  |  |  | 211,977 |  | 209,494
Right-of-use assets, operating leases | 86,414 |  |  |  |  |  |  |  | 86,414 |  |  | 63,334
Assets | 1,589,422 |  |  |  | 1,962,149 |  |  |  | 1,589,422 | 1,962,149 |  | 2,019,962
Deferred revenue, current | 63,310 |  |  |  | 109,056 |  |  |  | 63,310 | 109,056 |  | 81,775
Other current liabilities | 5,063 |  |  |  | 3,464 |  |  |  | 5,063 | 3,464 |  | 9,331
Deferred revenue, non-current | 138,995 |  |  |  | 165,352 |  |  |  | 138,995 | 165,352 |  | 161,911
Operating lease liabilities, non-current | 93,675 |  |  |  |  |  |  |  | 93,675 |  |  | 64,250
Financing lease liabilities, non-current | 38,689 |  |  |  |  |  |  |  | 38,689 |  |  | 37,718
Deferred lease obligation, non-current |  |  |  |  | 10,006 |  |  |  |  | 10,006 |  |
Lease financing obligation |  |  |  |  | 33,489 |  |  |  |  | 33,489 |  |
Accumulated deficit | (1,496,454) |  |  |  | (1,006,627) |  |  |  | (1,496,454) | (1,006,627) |  | (982,432)
Total liabilities and stockholders’ equity | 1,589,422 |  |  |  | 1,962,149 |  |  |  | 1,589,422 | 1,962,149 |  | 2,019,962
Balance without adoption of ASC 606 |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 94,978 |  |  |
Loss from operations |  |  |  |  |  |  |  |  | (510,951) |  |  |
Loss before income taxes |  |  |  |  |  |  |  |  | (479,947) |  |  |
Net loss |  |  |  |  |  |  |  |  | $ (479,252) |  |  |
Net loss per share - basic and diluted (in dollars per share) |  |  |  |  |  |  |  |  | $ (1.45) |  |  |
Deferred revenue, current | 55,256 |  |  |  |  |  |  |  | $ 55,256 |  |  |
Deferred revenue, non-current | 143,007 |  |  |  |  |  |  |  | 143,007 |  |  |
Accumulated deficit | (1,489,669) |  |  |  |  |  |  |  | (1,489,669) |  |  |
Accounting Standards Update 2016-02 |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Right-of-use assets, operating leases |  |  |  |  |  |  |  |  |  |  |  | 63,300
Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  |  |  |  |  |  |  |  | $ (2,700)
Accounting Standards Update 2014-09 | Adjustments |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 34,769 |  |  |
Loss from operations |  |  |  |  |  |  |  |  | 34,769 |  |  |
Loss before income taxes |  |  |  |  |  |  |  |  | 34,769 |  |  |
Net loss |  |  |  |  |  |  |  |  | $ 34,769 |  |  |
Net loss per share - basic and diluted (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.10 |  |  |
Deferred revenue, current | (8,054) |  |  |  |  |  |  |  | $ (8,054) |  |  |
Deferred revenue, non-current | 4,012 |  |  |  |  |  |  |  | 4,012 |  |  |
Accumulated deficit | $ 6,785 |  |  |  |  |  |  |  | 6,785 |  |  |
Collaboration revenue |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 42,803 |  |  |
Collaboration revenue | Balance without adoption of ASC 606 |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 45,570 |  |  |
Collaboration revenue | Accounting Standards Update 2014-09 | Adjustments |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 2,767 |  |  |
Collaboration revenue from related party |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 5,233 |  |  |
Collaboration revenue from related party | Balance without adoption of ASC 606 |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 37,235 |  |  |
Collaboration revenue from related party | Accounting Standards Update 2014-09 | Adjustments |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | $ 32,002 |  |  |
Previously Reported |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  | 11,686 |  |  |  |  | 11,686 |  |
Prepaid expenses and other current assets |  |  |  |  | 28,399 |  |  |  |  | 28,399 |  |
Property and equipment, net |  |  |  |  | 211,977 |  |  |  |  | 211,977 |  |
Assets |  |  |  |  | 1,962,149 |  |  |  |  | 1,962,149 |  |
Deferred revenue, current |  |  |  |  | 109,056 |  |  |  |  | 109,056 |  |
Other current liabilities |  |  |  |  | 3,464 |  |  |  |  | 3,464 |  |
Deferred revenue, non-current |  |  |  |  | 165,352 |  |  |  |  | 165,352 |  |
Deferred lease obligation, non-current |  |  |  |  | 10,006 |  |  |  |  | 10,006 |  |
Lease financing obligation |  |  |  |  | 33,489 |  |  |  |  | 33,489 |  |
Accumulated deficit |  |  |  |  | (1,006,627) |  |  |  |  | (1,006,627) |  |
Total liabilities and stockholders’ equity |  |  |  |  | 1,962,149 |  |  |  |  | 1,962,149 |  |
Adjustment | Accounting Standards Update 2016-02 |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Prepaid expenses and other current assets |  |  |  |  | (300) |  |  |  |  | (300) |  |
Property and equipment, net |  |  |  |  | (2,483) |  |  |  |  | (2,483) |  |
Right-of-use assets, operating leases |  |  |  |  | 63,334 |  |  |  |  | 63,334 |  |
Assets |  |  |  |  | 60,551 |  |  |  |  | 60,551 |  |
Other current liabilities |  |  |  |  | 5,867 |  |  |  |  | 5,867 |  |
Operating lease liabilities, non-current |  |  |  |  | 64,250 |  |  |  |  | 64,250 |  |
Financing lease liabilities, non-current |  |  |  |  | 37,718 |  |  |  |  | 37,718 |  |
Deferred lease obligation, non-current |  |  |  |  | (10,006) |  |  |  |  | (10,006) |  |
Lease financing obligation |  |  |  |  | (33,489) |  |  |  |  | (33,489) |  |
Accumulated deficit |  |  |  |  | (3,789) |  |  |  |  | (3,789) |  |
Total liabilities and stockholders’ equity |  |  |  |  | 60,551 |  |  |  |  | 60,551 |  |
Adjustment | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  | (2,738) |  |  |  |  | (2,738) |  |
Assets |  |  |  |  | (2,738) |  |  |  |  | (2,738) |  |
Deferred revenue, current |  |  |  |  | (27,281) |  |  |  |  | (27,281) |  |
Deferred revenue, non-current |  |  |  |  | (3,441) |  |  |  |  | (3,441) |  |
Accumulated deficit |  |  |  |  | 27,984 |  |  |  |  | 27,984 |  |
Total liabilities and stockholders’ equity |  |  |  |  | $ (2,738) |  |  |  |  | $ (2,738) |  |

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