Net (Loss) Income Per Share - Schedule of Basic and Diluted Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
NET (LOSS) INCOME		$ (20,348)	$ 2,557	$ 33,412	$ (11,245)
Convertible note accretion, amortization, and interest, net of tax	[1]	0	1,975	0	0
NET (LOSS) INCOME USED IN DILUTED EPS		$ (20,348)	$ 4,532	$ 33,412	$ (11,245)
Basic weighted average shares outstanding (in shares)		122,559	110,461	119,087	107,605
Diluted (in shares)		122,559	119,191	121,356	107,605
Diluted weighted average shares outstanding (in shares)		122,559	119,191	121,356	107,605
Basic net income (loss) per share (in dollars per share)		$ (0.17)	$ 0.02	$ 0.28	$ (0.10)
Diluted net income (loss) per share (in dollars per share)		$ (0.17)	$ 0.04	$ 0.28	$ (0.10)
1.25% Convertible Senior Notes due 2025
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive effect of Convertible Notes (in shares)		0	5,538	0	0
Stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive effect of stock options and restricted stock awards (in shares)		0	3,017	2,077	0
Restricted Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive effect of stock options and restricted stock awards (in shares)		0	175	192	0

[1] This adjustment compensates for the effects of the if-converted impact of convertible notes in net income. Since an entity using the if-converted method assumes that a convertible debt instrument was converted into common shares at the beginning of the reporting period, net income is adjusted to reverse any recognized interest expense (including any amortization of discounts).