Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Shares Amounts (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net Income (Loss)		$ 41,577	$ 185,959	$ 128,291
Effect of dilutive securities:
Charges associated with convertible debt instruments, net of tax		0	387	0
Numerator for diluted earnings per share - net income available to common stockholders after the effect of dilutive securities		$ 41,577	$ 186,346	$ 128,291
Denominator:
Weighted average shares used in computing net income per share - basic		55,720	55,460	55,015
Effect of dilutive shares:
Options and stock units		457	608	915
Convertible Senior Notes	[1]	181	1,360	1,253
Contingent consideration		8	11	0
Dilutive effect of unvested performance stock units		11	16	81
Dilutive potential common shares		657	1,995	2,249
Denominator for diluted earnings per share - adjusted weighted average shares used in computing net income per share - diluted		56,377	57,455	57,264
Earnings per share:
Basic		$ 0.75	$ 3.35	$ 2.33
Diluted		$ 0.74	$ 3.24	$ 2.24

[1] Represents the dilutive impact for the Company's 0.375% Convertible Senior Notes due 2024 (the “ 2019 Notes”) and its 1.00% Convertible Senior Notes due 2028 (the “2023 Notes”). As of December 31, 2023, the if-converted value is less than the outstanding principal of the 2023 Notes and are therefore anti-dilutive. Refer to Note 14, “Convertible Senior Notes,” for more information.