Net 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, 2024	Mar. 31, 2023
Numerator:
Net income	$ 5,623	$ 15,901
Numerator for basic net income per common share	5,623	15,901
Numerator for diluted net income per common share	$ 5,623	$ 15,901
Denominator:
Denominator for basic net income per common share - adjusted weighted-average shares	72,842	75,807
Effect of dilutive securities:
Unvested restricted stock and stock units	331	504
Dilutive potential common shares	331	504
Denominator for diluted net income per common share - adjusted weighted-average shares	73,173	76,311
Basic net income per common share	$ 0.08	$ 0.21
Diluted net income per common share	$ 0.08	$ 0.21