Consolidated Statements of Stockholders' Equity Statement - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Retained earnings
Balance (in shares) at Dec. 31, 2020		42,290
Balance at Dec. 31, 2020	$ 1,332,703	$ 42	$ 388,121	$ (431)	$ 944,971
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under equity compensation plans (in shares)		409
Issuance of common stock under equity compensation plans	6,374	$ 1	6,373
Stock-based compensation expense	5,889		5,889
Tax withholdings related to vesting of stock-based awards (in shares)		(156)
Tax withholdings related to vesting of stock-based awards	(33,929)		(33,929)
Other comprehensive gain (loss), net of tax				593
Net income	178,084				178,084
Balance (in shares) at Mar. 31, 2021		42,543
Balance at Mar. 31, 2021	1,489,714	$ 43	366,454	162	1,123,055
Balance (in shares) at Dec. 31, 2021		41,686
Balance at Dec. 31, 2021	1,929,362	$ 42	279,768	355	1,649,197
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under equity compensation plans (in shares)		223
Issuance of common stock under equity compensation plans	6,377	$ 0	6,377
Stock-based compensation expense	6,178		6,178
Tax withholdings related to vesting of stock-based awards (in shares)		(63)
Tax withholdings related to vesting of stock-based awards	(6,815)		(6,815)
Other comprehensive gain (loss), net of tax				(116)
Net income	479,936				479,936
Balance (in shares) at Mar. 31, 2022		41,846
Balance at Mar. 31, 2022	$ 2,414,922	$ 42	$ 285,508	$ 239	$ 2,129,133