Earnings Per Share - Reconciliation of Basic and Diluted Shares Amounts (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator
Net Income (Loss)		$ 5,713	$ 19,786	$ 9,009	$ 35,123
Denominator
Weighted average shares used in computing net income per share - basic		55,884	55,705	55,838	55,648
Effect of dilutive shares
Options and stock units		391	451	437	487
Convertible Senior Notes	[1]	159	701	202	797
Dilutive effect of unvested performance stock units		0	1	0	0
Dilutive potential common shares		550	1,153	639	1,284
Denominator for diluted earnings per share - adjusted weighted average shares used in computing earnings per share - diluted		56,434	56,858	56,477	56,932
Earnings per share:
Basic		$ 0.1	$ 0.36	$ 0.16	$ 0.63
Diluted		$ 0.1	$ 0.35	$ 0.16	$ 0.62

[1] Represents the dilutive impact for the Company's 2019 Notes. As of June 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.