Net Income Per Share - Summary of Table Reconciling Basic and Diluted Net Income Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Basic Net Income Per Share
Net income	$ 22,640	$ 56,276
Weighted average common shares outstanding (in shares)	167,748	174,734
Effect of dilutive securities:
Restricted stock (in shares)	616	582
Stock options (in shares)	40	52
Basic Net Income Per Share (in dollars per share)	$ 0.13	$ 0.32
Earnings Per Share, Diluted [Abstract]
Net income	$ 22,640	$ 56,276
Weighted average common shares outstanding (in shares)	167,748	174,734
Weighted average shares outstanding (in shares)	168,404	175,368
Diluted Net Income Per Share (in dollars per share)	$ 0.13	$ 0.32
Stock Options
Summary Of Computation Of Basic And Diluted Earnings Per Share [Line Items]
Antidilutive securities not included in the computation of net income per diluted share	14	14