Interim Condensed Consolidated Statement of Changes In Equity (Unaudited) - USD ($) $ in Thousands	Total	Ordinary Shares	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Previously Reported	Previously Reported Ordinary Shares	Previously Reported Accumulated Other Comprehensive Income (Loss)	Previously Reported Accumulated Deficit	Revision of Prior Period, Accounting Standards Update, Adjustment	Revision of Prior Period, Accounting Standards Update, Adjustment Accumulated Deficit
Balance at beginning of the period (in shares) at Dec. 31, 2018		217,526,425				1,646,223
Balance at beginning of the period at Dec. 31, 2018	$ 1,050,607	$ 1,677,510	$ 5,358	$ (632,261)	$ 1,050,607	$ 1,677,510	$ 5,358	$ (632,261)
Increase (Decrease) in Shareholders' Equity
Issuance of ordinary shares, net (in shares)		2
Share-based award activity	3,176	$ 3,176
Net loss	(59,260)			(59,260)
Comprehensive loss	(3,770)		(3,770)
Balance at end of the period (in shares) at Mar. 31, 2019		217,526,427
Balance at end of the period at Mar. 31, 2019	990,753	$ 1,680,686	1,588	(691,521)
Balance at beginning of the period (in shares) at Dec. 31, 2018		217,526,425				1,646,223
Balance at beginning of the period at Dec. 31, 2018	1,050,607	$ 1,677,510	5,358	(632,261)	$ 1,050,607	$ 1,677,510	$ 5,358	$ (632,261)
Increase (Decrease) in Shareholders' Equity
Net loss	(137,021)
Comprehensive loss	(7,631)
Balance at end of the period (in shares) at Jun. 30, 2019		305,268,497
Balance at end of the period at Jun. 30, 2019	1,356,654	$ 2,128,209	(2,273)	(769,282)
Balance at beginning of the period (in shares) at Mar. 31, 2019		217,526,427
Balance at beginning of the period at Mar. 31, 2019	990,753	$ 1,680,686	1,588	(691,521)
Increase (Decrease) in Shareholders' Equity
Tax Receivable Agreement	(264,600)
Issuance of ordinary shares, net (in shares)		7,929
Issuance of ordinary shares, net	137	$ 137
Merger capitalization (in shares)		87,749,999
Merger recapitalization	678,054	$ 678,054
Share-based award activity	33,932	$ 33,932
Net loss	(77,761)			(77,761)
Comprehensive loss	(3,861)		(3,861)
Balance at end of the period (in shares) at Jun. 30, 2019		305,268,497
Balance at end of the period at Jun. 30, 2019	1,356,654	$ 2,128,209	(2,273)	(769,282)
Balance at beginning of the period (in shares) at Dec. 31, 2019		306,874,115
Balance at beginning of the period at Dec. 31, 2019	1,360,412	$ 2,208,529	(4,879)	(843,238)					$ (9,319)	$ (9,319)
Increase (Decrease) in Shareholders' Equity
Issuance of ordinary shares, net (in shares)		27,600,000
Issuance of ordinary shares, net	539,714	$ 539,714
Exercise of public warrants (in shares)		28,880,098
Exercise of public warrants	277,526	$ 277,526
Exercise of stock options (in shares)		3,715,455
Exercise of stock options	1,182	$ 1,182
Vesting of restricted stock units (in shares)		169,842
Shares returned to the Company for net share settlements (in shares)		(2,301,458)
Shares returned to the Company for net share settlements	(10,302)	$ (10,302)
Share-based award activity	16,384	$ 16,384
Net loss	(74,001)			(74,001)
Comprehensive loss	(8,470)		(8,470)
Balance at end of the period (in shares) at Mar. 31, 2020		364,938,052
Balance at end of the period at Mar. 31, 2020	2,093,126	$ 3,033,033	(13,349)	(926,558)
Balance at beginning of the period (in shares) at Dec. 31, 2019		306,874,115
Balance at beginning of the period at Dec. 31, 2019	1,360,412	$ 2,208,529	(4,879)	(843,238)					$ (9,319)	$ (9,319)
Increase (Decrease) in Shareholders' Equity
Net loss	(75,492)
Comprehensive loss	(10,750)
Balance at end of the period (in shares) at Jun. 30, 2020		387,335,119
Balance at end of the period at Jun. 30, 2020	2,382,589	$ 3,326,267	(15,629)	(928,049)
Balance at beginning of the period (in shares) at Mar. 31, 2020		364,938,052
Balance at beginning of the period at Mar. 31, 2020	2,093,126	$ 3,033,033	(13,349)	(926,558)
Increase (Decrease) in Shareholders' Equity
Issuance of ordinary shares, net (in shares)		20,982,500
Issuance of ordinary shares, net	304,030	$ 304,030
Exercise of stock options (in shares)		3,723,332
Vesting of restricted stock units (in shares)		2,528
Shares returned to the Company for net share settlements (in shares)		(2,311,293)
Shares returned to the Company for net share settlements	(15,118)	$ (15,118)
Share-based award activity	4,322	$ 4,322
Net loss	(1,491)			(1,491)
Comprehensive loss	(2,280)		(2,280)
Balance at end of the period (in shares) at Jun. 30, 2020		387,335,119
Balance at end of the period at Jun. 30, 2020	$ 2,382,589	$ 3,326,267	$ (15,629)	$ (928,049)