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Net Loss per Share Attributable to Common Stock - Summary of Anti-dilutive Stock Equivalents (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 01, 2019	Aug. 05, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share (in shares)			26,395,602	12,873,233	26,395,602	12,873,233
Restricted stock units issued and outstanding or deferred (in shares)			3,699,318		3,699,318
Performance Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Restricted stock units issued and outstanding or deferred (in shares)			331,759		331,759
Performance Restricted Stock Units \| Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Percentage of target amount					200.00%
Chief Executive Officer \| Performance Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options granted (in shares)	150,000				150,000
Chief Executive Officer \| Performance Restricted Stock Units \| Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options granted (in shares)	300,000
Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share (in shares)			2,040,000	2,040,000	2,040,000	2,040,000
Share-based Payment Arrangement, Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share (in shares)			4,639,132	6,493,269	4,639,132	6,493,269
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share (in shares)			3,671,589	4,339,964	3,671,589	4,339,964
Restricted Stock Units (RSUs) \| Non-employee Directors
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share (in shares)					27,729
1.75% Convertible Senior Notes due 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share (in shares)			777,021	0	777,021	0
Debt conversion					$ 39
1.75% Convertible Senior Notes due 2023 \| Subsequent Event
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt conversion		$ 226
0% Convertible Senior Notes due 2025
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share (in shares)			9,119,960	0	9,119,960	0
0.5% Convertible Senior Notes Due 2027
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share (in shares)			6,147,900	0	6,147,900	0