Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Treasury Stock	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Dec. 31, 2020			35,103	0
Beginning balance at Dec. 31, 2020	$ 1,342,429		$ 351	$ 0	$ 364,288		$ (15,455)	$ 993,245
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes (in shares)			217
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes	(7,067)		$ 2		(7,069)
Stock-based compensation expense	4,716				4,716
Foreign currency translation adjustments, net of tax	(80)						(80)
Net earnings	43,168							43,168
Ending balance (in shares) at Mar. 31, 2021			35,320	0
Ending balance at Mar. 31, 2021	1,383,166		$ 353	$ 0	361,935		(15,535)	1,036,413
Beginning balance (in shares) at Dec. 31, 2020			35,103	0
Beginning balance at Dec. 31, 2020	1,342,429		$ 351	$ 0	364,288		(15,455)	993,245
Ending balance (in shares) at Dec. 31, 2021			34,897	0
Ending balance at Dec. 31, 2021	$ 1,509,227	$ (26,942)	$ 349	$ 0	368,282	$ (44,731)	(27,094)	1,167,690	$ 17,789
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes (in shares)			175
Issuance of common stock under employee stock plans, net of shares withheld for payroll taxes	$ (6,597)		$ 2		(6,599)
Stock-based compensation expense	5,007				5,007
Foreign currency translation adjustments, net of tax	1,865						1,865
Net earnings	56,631							56,631
Ending balance (in shares) at Mar. 31, 2022			35,072	0
Ending balance at Mar. 31, 2022	$ 1,539,191		$ 351	$ 0	$ 321,959		$ (25,229)	$ 1,242,110