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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Summary of Reconciliation of Cash, Cash Equivalents and Restricted Cash | The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheets that sum to the total of the amounts shown in the condensed consolidated statements of cash flows:
|  | September 30, 2021 |  |  | September 30, 2020 |  |
|  | (in thousands) |  |
Cash and cash equivalents |  | $ | 180,347 |  |  | $ | 366,967 |  |
Restricted cash — Included in “Prepaid expenses and other current assets” |  |  | 176 |  |  |  | — |  |
Restricted cash — Included in “Other assets” |  |  | 2,556 |  |  |  | 424 |  |
Total cash, cash equivalents and restricted cash shown in the condensed consolidated statements of cash flows |  | $ | 183,079 |  |  | $ | 367,391 |  |
Summary of Adjustments to Condensed Consolidated Balance Sheet | The following table summarizes the adjustments made to our condensed consolidated balance sheet as of January 1, 2021 as a result of applying the modified retrospective method in adopting ASU 2020-06:
|  | As Reported |  |  | Adjustments |  |  | As Adjusted |
|  | December 31, 2020 |  |  | Account 2027 Notes wholly as debt |  |  | Cumulative impact on interest expense |  |  | January 1, 2021 |
|  | (in thousands) |
2027 Notes, net |  | $ | 383,436 |  |  | $ | 169,173 |  |  | $ | (14,328 | ) |  | $ | 538,281 |
Other long-term liabilities (1) |  |  | 9,520 |  |  |  | (1,095 | ) |  | $ | — |  |  |  | 8,425 |
Additional paid-in capital |  |  | 1,021,344 |  |  |  | (168,078 | ) |  |  | — |  |  |  | 853,266 |
Accumulated deficit |  |  | (888,755 | ) |  |  | — |  |  |  | 14,328 |  |  |  | (874,427 | )
(1) Related deferred tax liability was recorded as part of “Other long-term liabilities.”

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- Definition Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=116846552&loc=d3e765-108305 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=116846552&loc=d3e725-108305 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794 + Details
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