Net Income per Common Share - Summary of Calculation of Basic And Diluted EPS (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net income	$ 8,767	$ 35,708
Weighted average common shares:
Basic	116,258	115,425
Dilutive effect of options and RSUs	1,236	1,106
Weighted average shares outstanding, diluted	117,494	116,531
Net income per share:
Basic	$ 0.08	$ 0.31
Diluted	$ 0.07	$ 0.31
Antidilutive and contingent options and RSUs excluded from diluted EPS	217	1,451

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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