Earnings Per Share - Reconciliation of Basic and Diluted Shares Amounts (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator
Net (loss) income		$ (654)	$ 16,923	$ 8,355	$ 52,046
Denominator
Weighted average shares used in computing net (loss) income per share - basic		56,012	55,766	55,896	55,688
Effect of dilutive shares
Options and stock units		0	439	419	469
Convertible senior notes	[1]	0	735	0	776
Dilutive potential common shares		0	1,174	419	1,245
Denominator for diluted (loss) earnings per share - adjusted weighted average shares used in computing earnings per share - diluted		56,012	56,940	56,315	56,933
(Loss) earnings per share:
Basic		$ (0.01)	$ 0.3	$ 0.15	$ 0.93
Diluted		$ (0.01)	$ 0.3	$ 0.15	$ 0.91

[1] Represents the dilutive impact for the Company's 2019 Notes. As of September 30, 2024, the if-converted value is less than the outstanding principal of the 2023 Notes and are therefore anti-dilutive. Refer to Note 9, "Convertible Senior Notes," above for more information.