Earnings (Loss) Per Share - Reconciliation of the Numerator and Denominator of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Numerator [Abstract]
Net income (loss)		$ (198,106)	$ 4,214
Denominator [Abstract]
Shares used for basic income (loss) per share		48,613	42,745
Effect of dilutive stock options and restricted stock units outstanding [Abstract]
Shares used for diluted income (loss) per share	[1]	48,613	43,183
Earnings (loss) per share, Basic		$ (4.08)	$ 0.10
Earnings (loss) per share, Diluted	[1]	$ (4.08)	$ 0.10
Non-Qualified Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Dilutive securities outstanding not included in the computation of earnings per share because their effect is anti-dilutive (in shares)		162	80
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Dilutive securities outstanding not included in the computation of earnings per share because their effect is anti-dilutive (in shares)		263	56
Restricted Stock Awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Dilutive securities outstanding not included in the computation of earnings per share because their effect is anti-dilutive (in shares)		38
Performance-Based Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Dilutive securities outstanding not included in the computation of earnings per share because their effect is anti-dilutive (in shares)		33
Non-Qualified Stock Options
Effect of dilutive stock options and restricted stock units outstanding [Abstract]
Effect of dilutive stock options and restricted stock units outstanding (in shares)			127
Restricted Stock Awards
Effect of dilutive stock options and restricted stock units outstanding [Abstract]
Effect of dilutive stock options and restricted stock units outstanding (in shares)			16
Restricted Stock Units (RSUs)
Effect of dilutive stock options and restricted stock units outstanding [Abstract]
Effect of dilutive stock options and restricted stock units outstanding (in shares)			292
Performance-Based Stock Units
Effect of dilutive stock options and restricted stock units outstanding [Abstract]
Effect of dilutive stock options and restricted stock units outstanding (in shares)			3

[1] The impact of potentially dilutive securities for the three months ended March 31, 2020 was not considered because the impact would be anti-dilutive.