Condensed Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)
Beginning balance (in shares) at Dec. 31, 2020		199,438,098
Beginning balance at Dec. 31, 2020	$ 310,000	$ 0	$ 60,000	$ 261,000	$ (11,000)
Net income (loss)	(91,000)			(91,000)
Shares issued in connection with vesting of restricted stock units (in shares)		505,438
Shares withheld to cover employee taxes on vested restricted stock units (in shares)		(146,490)
Shares withheld to cover employee taxes on vested restricted stock units	(3,000)		(3,000)
Restricted stock unit repurchases (in shares)		(20,368)
Stock option exercise (in shares)		640,121
Stock-based compensation	3,000		3,000
Ending balance (in shares) at Mar. 31, 2021		200,416,799
Ending balance at Mar. 31, 2021	$ 219,000	$ 0	60,000	170,000	(11,000)
Beginning balance (in shares) at Dec. 31, 2021	217,065,096	217,065,096
Beginning balance at Dec. 31, 2021	$ 530,000	$ 0	381,000	159,000	(10,000)
Net income (loss)	(121,000)			(121,000)
Shares issued in connection with vesting of restricted stock units (in shares)		676,146
Shares withheld to cover employee taxes on vested restricted stock units (in shares)		(275,822)
Shares withheld to cover employee taxes on vested restricted stock units	$ (3,000)		(3,000)
Stock option exercise (in shares)	34,461	34,461
Stock-based compensation	$ 3,000		3,000
Ending balance (in shares) at Mar. 31, 2022	217,499,881	217,499,881
Ending balance at Mar. 31, 2022	$ 409,000	$ 0	$ 381,000	$ 38,000	$ (10,000)