Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator for basic and diluted net income per share:
Net income/(loss) from continuing operations	$ 59,005	$ (5,524)	$ 92,811	$ (3,791)
(Loss)/income from discontinued operations, net of tax	0	(48)	13	(94)
Net income/(loss)	$ 59,005	$ (5,572)	$ 92,824	$ (3,885)
Denominator:
Weighted-average shares for basic income per share (in shares)	79,403	80,473	79,216	80,326
Dilutive effect of stock options and restricted stock units (in shares)	1,243	0	1,551	0
Weighted-average shares for diluted income per share (in shares)	80,646	80,473	80,767	80,326
Basic:
Net (loss)/income from continuing operations (usd per share)	$ 0.74	$ (0.07)	$ 1.17	$ (0.05)
Loss from discontinued operations, net of tax (usd per share)	0	0	0	0
Net (loss)/income (usd per share)	0.74	(0.07)	1.17	(0.05)
Diluted:
Net income from continuing operations (usd per share)	0.73	(0.07)	1.15	(0.05)
Loss from discontinued operations, net of tax (usd per share)	0	0	0	0
Net (loss)/income (usd per share)	$ 0.73	$ (0.07)	$ 1.15	$ (0.05)
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	100		100