CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Restricted stock units and awards	Performance Share Units	Common Stock	Common Stock Restricted stock units and awards	Common Stock Performance Share Units	Treasury Shares	Additional Paid-In Capital	Additional Paid-In Capital Restricted stock units and awards	Additional Paid-In Capital Performance Share Units	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Common stock, beginning balance (in shares) at Dec. 31, 2022				136,295
Treasury stock, beginning balance (in shares) at Dec. 31, 2022							86,115
Beginning balance at Dec. 31, 2022	$ 713,452			$ 1,363			$ (824,778)	$ 799,147			$ 734,116	$ 3,604
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	133,705										133,705
Other comprehensive income (loss)	811											811
Share repurchases (in shares)							1,151
Share repurchases	(58,000)						$ (58,000)
Indirect repurchase of shares for minimum tax withholding (in shares)							173
Indirect repurchase of shares for minimum tax withholding	(8,448)						$ (8,448)
Restricted stock units and awards and performance share units (in shares)					153	244
Restricted stock units and awards and performance share units		$ 0	$ 0		$ 2	$ 2			$ (2)	$ (2)
Stock options exercised (in shares)				433
Stock options exercised	8,375			$ 4				8,371
Stock-based compensation	9,721							9,721
Business acquisitions (in shares)				231
Business acquisitions	11,095			$ 3				11,092
Excise tax on share repurchases	(117)						$ (654)	537
Common stock, ending balance (in shares) at Sep. 30, 2023				137,356
Treasury stock, ending balance (in shares) at Sep. 30, 2023							87,439
Ending balance at Sep. 30, 2023	810,594			$ 1,374			$ (891,880)	828,864			867,821	4,415
Common stock, beginning balance (in shares) at Jun. 30, 2023				137,081
Treasury stock, beginning balance (in shares) at Jun. 30, 2023							87,259
Beginning balance at Jun. 30, 2023	776,043			$ 1,371			$ (882,088)	818,693			834,139	3,928
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33,682										33,682
Other comprehensive income (loss)	487											487
Share repurchases (in shares)							176
Share repurchases	(9,472)						$ (9,472)
Indirect repurchase of shares for minimum tax withholding (in shares)							4
Indirect repurchase of shares for minimum tax withholding	(224)						$ (224)
Restricted stock units and awards and performance share units (in shares)					9
Restricted stock units and awards and performance share units		0			$ 1				(1)
Stock options exercised (in shares)				212
Stock options exercised	4,123			$ 1				4,122
Stock-based compensation	3,102							3,102
Business acquisitions (in shares)				54
Business acquisitions	2,799			$ 1				2,798
Excise tax on share repurchases	54						$ (96)	150
Common stock, ending balance (in shares) at Sep. 30, 2023				137,356
Treasury stock, ending balance (in shares) at Sep. 30, 2023							87,439
Ending balance at Sep. 30, 2023	810,594			$ 1,374			$ (891,880)	828,864			867,821	4,415
Common stock, beginning balance (in shares) at Dec. 31, 2023				137,387
Treasury stock, beginning balance (in shares) at Dec. 31, 2023							87,573
Beginning balance at Dec. 31, 2023	791,618			$ 1,374			$ (899,093)	832,475			855,084	1,778
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	131,761										131,761
Other comprehensive income (loss)	(1,621)											(1,621)
Indirect repurchase of shares for minimum tax withholding (in shares)							173
Indirect repurchase of shares for minimum tax withholding	$ (11,444)						$ (11,444)
Restricted stock units and awards and performance share units (in shares)					124	273
Restricted stock units and awards and performance share units		$ 0	$ 0		$ 1	$ 3			$ (1)	$ (3)
Stock options exercised (in shares)	0
Stock-based compensation	$ 7,431							7,431
Business acquisitions (in shares)				150
Business acquisitions	10,175			$ 1				10,174
Common stock, ending balance (in shares) at Sep. 30, 2024				137,934
Treasury stock, ending balance (in shares) at Sep. 30, 2024							87,746
Ending balance at Sep. 30, 2024	927,920			$ 1,379			$ (910,537)	850,076			986,845	157
Common stock, beginning balance (in shares) at Jun. 30, 2024				137,905
Treasury stock, beginning balance (in shares) at Jun. 30, 2024							87,743
Beginning balance at Jun. 30, 2024	891,434			$ 1,379			$ (910,322)	845,962			951,761	2,654
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	35,084										35,084
Other comprehensive income (loss)	(2,497)											(2,497)
Indirect repurchase of shares for minimum tax withholding (in shares)							3
Indirect repurchase of shares for minimum tax withholding	(215)						$ (215)
Restricted stock units and awards and performance share units (in shares)					6
Stock-based compensation	2,415							2,415
Business acquisitions (in shares)				23
Business acquisitions	1,699							1,699
Common stock, ending balance (in shares) at Sep. 30, 2024				137,934
Treasury stock, ending balance (in shares) at Sep. 30, 2024							87,746
Ending balance at Sep. 30, 2024	$ 927,920			$ 1,379			$ (910,537)	$ 850,076			$ 986,845	$ 157