Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Cumulative effect of adoption of ASU 2020-06	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Cumulative effect of adoption of ASU 2020-06	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Accumulated Deficit Cumulative effect of adoption of ASU 2020-06
Balances (in shares) at Dec. 31, 2021			206,739,874
Balances at Dec. 31, 2021	$ 107,348	$ (18,196)	$ 0	$ 2,022,701	$ (36,868)	$ 203	$ (1,915,556)	$ 18,672
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense	7,996			7,996
Shares issued upon vesting of restricted stock units and for exercises of stock options (in shares)			354,089
Shares issued upon vesting of restricted stock units	1			1
Shares issued for accrued compensation (in shares)			772,071
Shares issued for accrued compensation	1,698			1,698
Shares issued as payment for services (in shares)			283,987
Shares issued as payment for services	576			576
Net income	50,493						50,493
Other comprehensive loss	(7,384)					(7,384)
Balances (in shares) at Sep. 30, 2022			208,150,021
Balances at Sep. 30, 2022	142,532		$ 0	1,996,104		(7,181)	(1,846,391)
Balances (in shares) at Jun. 30, 2022			208,150,021
Balances at Jun. 30, 2022	55,653		$ 0	1,993,979		(4,556)	(1,933,770)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense	2,125			2,125
Net income	87,379						87,379
Other comprehensive loss	(2,625)					(2,625)
Balances (in shares) at Sep. 30, 2022			208,150,021
Balances at Sep. 30, 2022	$ 142,532		$ 0	1,996,104		(7,181)	(1,846,391)
Balances (in shares) at Dec. 31, 2022	208,150,021		208,150,021
Balances at Dec. 31, 2022	$ 126,259		$ 0	1,998,314		(3,488)	(1,868,567)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense	7,626			7,626
Shares issued upon vesting of restricted stock units and for exercises of stock options (in shares)			751,233
Shares issued upon vesting of restricted stock units	0			0
Shares issued for accrued compensation (in shares)			3,068,825
Shares issued for accrued compensation	3,361			3,361
Shares issued as payment for services (in shares)			465,808
Shares issued as payment for services	545			545
Shares issued in public offering, net of issuance costs (in shares)			43,962,640
Shares issued in public offering, net of issuance costs	72,808			72,808
Net income	(62,848)						(62,848)
Other comprehensive loss	$ (73)					(73)
Balances (in shares) at Sep. 30, 2023	256,398,527		256,398,527
Balances at Sep. 30, 2023	$ 147,678		$ 0	2,082,654		(3,561)	(1,931,415)
Balances (in shares) at Jun. 30, 2023			255,482,753
Balances at Jun. 30, 2023	166,210		$ 0	2,080,348		(2,518)	(1,911,620)
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense	2,306			2,306
Shares issued upon vesting of restricted stock units and for exercises of stock options (in shares)			53,418
Shares issued upon vesting of restricted stock units	0			0
Shares issued for accrued compensation (in shares)			862,356
Shares issued for accrued compensation	0			0
Net income	(19,795)						(19,795)
Other comprehensive loss	$ (1,043)					(1,043)
Balances (in shares) at Sep. 30, 2023	256,398,527		256,398,527
Balances at Sep. 30, 2023	$ 147,678		$ 0	$ 2,082,654		$ (3,561)	$ (1,931,415)