Basis of Presentation and Consolidation - Schedule of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator
Numerator for basic and diluted earnings per share - income (loss) available to common stockholders	$ 22,059	$ (11,591)
Denominator
Denominator for basic earnings per share - weighted average shares outstanding (in shares)	50,448	50,236
Effect of dilutive securities - stock options and other stock units (in shares)	346	0
Denominator for diluted earnings per share - adjusted weighted average shares outstanding (in shares)	50,794	50,236
Earnings (Loss) per share:
Basic (in USD per share)	$ 0.44	$ (0.23)
Diluted (in USD per share)	$ 0.43	$ (0.23)
Anti-dilutive shares excluded from computation of diluted loss per share (in shares)	0	294