Income Per Common Share - Computation of Basic and Diluted Net Income Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net income	$ 15,901	$ 58,766
Numerator for basic net income per common share	15,901	58,766
Numerator for diluted net income per common share	$ 15,901	$ 58,766
Denominator:
Denominator for basic net income per common share - adjusted weighted-average shares	75,807	88,421
Effect of dilutive securities:
Unvested restricted stock and stock units	504	1,345
Dilutive potential common shares	504	1,345
Denominator for diluted net income per common share - adjusted weighted-average shares	76,311	89,766
Basic net income per common share	$ 0.21	$ 0.66
Diluted net income per common share	$ 0.21	$ 0.65