Income Taxes - Deferred Tax Assets And Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Significant components of the Company's deferred tax assets and liabilities
Intangible assets	$ 1,197	$ 1,197
Deferred revenue	16,274	8,051
Interest expense	21,183	10,216
Other reserves and accruals	5,087	1,504
Tax credit carryforwards	5,613	3,843
Amortization of stock-based compensation	3,900	9,081
Non-Compensatory warrants	5,020	4,322
Capitalized research & development expenditures	35,353	27,084
Right of use liability (operating leases)	27,715	22,647
Net operating loss carryforwards	120,992	64,014
Total deferred tax asset	242,334	151,959
Valuation allowance	(171,594)	(118,677)
Net deferred tax assets	70,740	33,282
Intangible assets	(7,360)	(15)
Convertible debt	(27,420)	(6,592)
Right of use asset (operating leases)	(27,684)	(23,040)
Other reserves and accruals	(12)	(16)
Property, plant and equipment and right of use assets	(9,191)	(3,619)
Deferred tax liability	(71,667)	(33,282)
Net	(927)
Deferred tax assets, valuation allowance	171,600	118,700
U.S.
Significant components of the Company's deferred tax assets and liabilities
Deferred revenue	16,082	7,922
Interest expense	21,183	10,216
Other reserves and accruals	5,087	1,504
Tax credit carryforwards	4,360	2,590
Amortization of stock-based compensation	3,900	9,081
Non-Compensatory warrants	5,020	4,322
Capitalized research & development expenditures	30,870	22,601
Right of use liability (operating leases)	27,715	22,647
Net operating loss carryforwards	110,978	54,438
Total deferred tax asset	225,195	135,321
Valuation allowance	(154,467)	(102,055)
Net deferred tax assets	70,728	33,266
Intangible assets	(7,360)	(15)
Convertible debt	(27,420)	(6,592)
Right of use asset (operating leases)	(27,684)	(23,040)
Property, plant and equipment and right of use assets	(9,191)	(3,619)
Deferred tax liability	(71,655)	(33,266)
Net	(927)
Foreign
Significant components of the Company's deferred tax assets and liabilities
Intangible assets	1,197	1,197
Deferred revenue	192	129
Tax credit carryforwards	1,253	1,253
Capitalized research & development expenditures	4,483	4,483
Net operating loss carryforwards	10,014	9,576
Total deferred tax asset	17,139	16,638
Valuation allowance	(17,127)	(16,622)
Net deferred tax assets	12	16
Other reserves and accruals	(12)	(16)
Deferred tax liability	$ (12)	$ (16)