CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED) (in thousands, except share data and dividends per share) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Cash dividends declared per share	$ 0.01
Balances, Common Stock, Shares, Outstanding, Beginning at Dec. 31, 2019		112,987,952
Balances, Total Stockholders' Equity, Beginning at Dec. 31, 2019	$ 2,748,994	$ 1,130	$ 1,791,596	$ 967,587	$ (11,319)
Increase (Decrease) in Stockholders' Equity
Net loss	(411,895)			(411,895)
Other comprehensive income	190				190
Cash dividends	(1,130)			(1,130)
Issuance of common stock upon vesting of RSUs, net of shares used for tax withholdings (Shares)		730
Issuance of common stock upon vesting of RSUs, net of shares used for tax withholdings (Amount)	(3)	$ 0	(3)
Stock-based compensation expense	5,561		5,561
Balances, Common Stock, Shares, Outstanding, Ending at Mar. 31, 2020		112,988,682
Balances, Total Stockholders' Equity, Ending at Mar. 31, 2020	$ 2,341,717	$ 1,130	1,797,154	554,562	(11,129)
Cash dividends declared per share	$ 0.01
Balances, Common Stock, Shares, Outstanding, Beginning at Dec. 31, 2020	114,742,304	114,742,304
Balances, Total Stockholders' Equity, Beginning at Dec. 31, 2020	$ 2,016,160	$ 1,147	1,827,914	200,697	(13,598)
Increase (Decrease) in Stockholders' Equity
Net loss	(251,269)			(251,269)
Other comprehensive income	191				191
Cash dividends	(1,147)			(1,147)
Stock-based compensation expense	$ 5,737		5,737
Balances, Common Stock, Shares, Outstanding, Ending at Mar. 31, 2021	114,742,304	114,742,304
Balances, Total Stockholders' Equity, Ending at Mar. 31, 2021	$ 1,769,672	$ 1,147	$ 1,833,651	$ (51,719)	$ (13,407)