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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2020
Income Taxes |
Schedule Components of loss before income taxes and the provision for income taxes | The components of loss before income taxes and the income tax benefit for the years ended December 31, 2020, 2019, and 2018, by jurisdiction, are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 2019 | ​ | 2018 |
​ | ​ | 2020 | ​ | (as restated) | ​ | (as restated) | ​
​ |  | U.S. |  | Foreign |  | Total |  | U.S. |  | Foreign |  | Total |  | U.S. |  | Foreign |  | Total |
Loss before income taxes |  | $ | (624,302) |  | $ | (2,698) |  | $ | (627,000) |  | $ | (82,188) |  | $ | (1,555) |  | $ | (83,743) |  | $ | (93,497) |  | $ | (1,407) |  | $ | (94,903) | ​
Income tax benefit | ​ | ​ | 30,845 | ​ | ​ | — | ​ | ​ | 30,845 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 9,295 | ​ | ​ | — | ​ | ​ | 9,295 | ​
Net loss attributable to the Company |  | $ | (593,457) |  | $ | (2,698) |  | $ | (596,155) |  | $ | (82,188) |  | $ | (1,555) |  | $ | (83,743) |  | $ | (84,201) |  | $ | (1,407) |  | $ | (85,608) | ​
Schedule of Significant Components of Deferred Income Tax Expense (Benefit) | The significant components of deferred income tax expense (benefit) for the years ended December 31, 2020, 2019, and 2018, by jurisdiction, are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | 2019 | ​ | 2018 | ​
​ | ​ | 2020 | ​ | (as restated) | ​ | (as restated) | ​
​ |  | U.S. |  | Foreign |  | Total |  | U.S. |  | Foreign |  | Total |  | U.S. |  | Foreign |  | Total | ​
Deferred tax (benefit) expense | ​ | $ | (31,408) | ​ | $ | (67) | ​ | $ | (31,475) | ​ | $ | (10,621) | ​ | $ | (426) | ​ | $ | (11,047) | ​ | $ | (11,745) | ​ | $ | 933 | ​ | $ | (10,812) | ​
Net operating loss carryforward generated | ​ | ​ | (51,849) | ​ | ​ | (438) | ​ | ​ | (52,287) | ​ | ​ | (5,099) | ​ | ​ | (270) | ​ | ​ | (5,369) | ​ | ​ | (10,321) | ​ | ​ | (665) | ​ | ​ | (10,986) | ​
Valuation allowance increase (decrease) | ​ | ​ | 52,412 | ​ | ​ | 505 | ​ | ​ | 52,917 | ​ | ​ | 15,720 | ​ | ​ | 696 | ​ | ​ | 16,416 | ​ | ​ | 12,771 | ​ | ​ | (268) | ​ | ​ | 12,503 | ​
Benefit for income taxes | ​ | $ | (30,845) | ​ | $ | — | ​ | $ | (30,845) | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | (9,295) | ​ | $ | — | ​ | $ | (9,295) | ​
Schedule of Effective Income Tax Rate Reconciliation | The Company’s effective income tax rate differed from the federal statutory rate as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2020 |  | 2019 |  | 2018 |
U.S. Federal statutory tax rate | ​ | (21.0) | % | (21.0) | % | (21.0) | %
Deferred state taxes | ​ | (2.3) | % | 1.4 | % | (1.9) | %
Common stock warrant liability | ​ | 13.4 | % | — | % | (1.0) | %
Other, net | ​ | (3.4) | % | (0.5) | % | 0.9 | %
Change in valuation allowance | ​ | 8.4 | % | 20.1 | % | 13.2 | %
​ | ​ | (4.9) | % | 0.0 | % | (9.8) | %
Schedule of Deferred Tax Assets and Liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | U.S. | ​ | Foreign | ​ | Total
​ |  | ​ |  | 2019 |  | ​ |  | 2019 |  | ​ |  | 2019
​ | ​ | 2020 | ​ | (as restated) | ​ | 2020 | ​ | (as restated) | ​ | 2020 | ​ | (as restated)
Intangible assets | ​ | $ | — | ​ | $ | — | ​ | $ | 1,197 | ​ | $ | 1,197 | ​ | $ | 1,197 | ​ | $ | 1,197
Deferred revenue | ​ | ​ | 16,082 | ​ | ​ | 7,922 | ​ | ​ | 192 | ​ | ​ | 129 | ​ | ​ | 16,274 | ​ | ​ | 8,051
Interest expense | ​ | ​ | 21,183 | ​ | ​ | 10,216 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 21,183 | ​ | ​ | 10,216
Other reserves and accruals | ​ | ​ | 5,087 | ​ | ​ | 1,504 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,087 | ​ | ​ | 1,504
Tax credit carryforwards | ​ | ​ | 4,360 | ​ | ​ | 2,590 | ​ | ​ | 1,253 | ​ | ​ | 1,253 | ​ | ​ | 5,613 | ​ | ​ | 3,843
Amortization of stock-based compensation | ​ | ​ | 3,900 | ​ | ​ | 9,081 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,900 | ​ | ​ | 9,081
Non-compensatory warrants | ​ | ​ | 5,020 | ​ | ​ | 4,322 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,020 | ​ | ​ | 4,322
Capitalized research & development expenditures | ​ | ​ | 30,870 | ​ | ​ | 22,601 | ​ | ​ | 4,483 | ​ | ​ | 4,483 | ​ | ​ | 35,353 | ​ | ​ | 27,084
Right of use liability (operating leases) | ​ | ​ | 27,715 | ​ | ​ | 22,647 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 27,715 | ​ | ​ | 22,647
Net operating loss carryforwards | ​ | ​ | 110,978 | ​ | ​ | 54,438 | ​ | ​ | 10,014 | ​ | ​ | 9,576 | ​ | ​ | 120,992 | ​ | ​ | 64,014
Total deferred tax asset | ​ | ​ | 225,195 | ​ | ​ | 135,321 | ​ | ​ | 17,139 | ​ | ​ | 16,638 | ​ | ​ | 242,334 | ​ | ​ | 151,959
Valuation allowance | ​ | ​ | (154,467) | ​ | ​ | (102,055) | ​ | ​ | (17,127) | ​ | ​ | (16,622) | ​ | ​ | (171,594) | ​ | ​ | (118,677)
Net deferred tax assets | ​ | $ | 70,728 | ​ | $ | 33,266 | ​ | $ | 12 | ​ | $ | 16 | ​ | $ | 70,740 | ​ | $ | 33,282
Intangible assets | ​ | ​ | (7,360) | ​ | ​ | (15) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (7,360) | ​ | ​ | (15)
Convertible debt | ​ | ​ | (27,420) | ​ | ​ | (6,592) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (27,420) | ​ | ​ | (6,592)
Right of use asset (operating leases) | ​ | ​ | (27,684) | ​ | ​ | (23,040) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (27,684) | ​ | ​ | (23,040)
Other reserves and accruals | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (12) | ​ | ​ | (16) | ​ | ​ | (12) | ​ | ​ | (16)
Property, plant and equipment and right of use assets | ​ | ​ | (9,191) | ​ | ​ | (3,619) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (9,191) | ​ | ​ | (3,619)
Deferred tax liability | ​ | $ | (71,655) | ​ | $ | (33,266) | ​ | $ | (12) | ​ | $ | (16) | ​ | $ | (71,667) | ​ | $ | (33,282)
Net | ​ | $ | (927) | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | (927) | ​ | $ | —
Schedule of Valuation Allowance | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | U.S. |  | Foreign |  | Total |
Increase in valuation allowance for current year increase in net operating losses | ​ | $ | 51,848 | ​ | $ | ​ | ​ | $ | 51,848 | ​
Increase (decrease) in valuation allowance for current year net increase (decrease) in deferred tax assets other than net operating losses | ​ | ​ | (5,742) | ​ | ​ | 133 | ​ | ​ | (5,609) | ​
Decrease in valuation allowance as a result of foreign currency fluctuation | ​ | ​ | 6,306 | ​ | ​ | — | ​ | ​ | 6,306 | ​
Increase in valuation allowance due to change in tax rates | ​ | ​ | — | ​ | ​ | 372 | ​ | ​ | 372 | ​
Net increase in valuation allowance | ​ | $ | 52,412 | ​ | $ | 505 | ​ | $ | 52,917 | ​

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- Definition Tabular disclosure of income before income tax between domestic and foreign jurisdictions and the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References No definition available. + Details
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- Definition Schedule of significant components of U.S. foreign deferred income taxes. + References No definition available. + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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