Consolidated Statements of Stockholders' Equity - 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, 2019				133,056
Treasury stock, beginning balance (in shares) at Dec. 31, 2019							77,637
Beginning balance at Dec. 31, 2019	$ 659,238			$ 1,331			$ (535,693)	$ 714,704			$ 479,576	$ (680)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	78,299										78,299
Other comprehensive income (loss)	(1,589)											(1,589)
Share repurchases (in shares)							2,311
Share repurchases	(57,564)						$ (57,564)
Indirect repurchase of shares for minimum tax withholding (in shares)							97
Indirect repurchase of shares for minimum tax withholding	(2,040)						$ (2,040)
Restricted stock units and awards and Performance share units (in shares)					25
Stock options exercised (in shares)				634
Stock options exercised	6,486			$ 6				6,480
Share-based compensation	8,869							8,869
Business acquisitions (in shares)				429
Business acquisitions	10,921			$ 4				10,917
Common stock, ending balances (in shares) at Dec. 31, 2020				134,144
Treasury stock, ending balance (in shares) at Dec. 31, 2020							80,045
Ending balance at Dec. 31, 2020	702,620			$ 1,341			$ (595,297)	740,970			557,875	(2,269)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	70,887										70,887
Other comprehensive income (loss)	1,302											1,302
Share repurchases (in shares)							3,012
Share repurchases	(96,382)						$ (96,382)
Indirect repurchase of shares for minimum tax withholding (in shares)							92
Indirect repurchase of shares for minimum tax withholding	(3,037)						$ (3,037)
Restricted stock units and awards and Performance share units (in shares)					80
Restricted stock units and awards and Performance share units		$ 0			$ 1				$ (1)
Stock options exercised (in shares)				647
Stock options exercised	7,311			$ 7				7,304
Share-based compensation	11,407							11,407
Business acquisitions (in shares)				316
Business acquisitions	$ 10,440			$ 3				10,437
Common stock, ending balances (in shares) at Dec. 31, 2021	135,187			135,187
Treasury stock, ending balance (in shares) at Dec. 31, 2021	83,149						83,149
Ending balance at Dec. 31, 2021	$ 704,548			$ 1,352			$ (694,716)	770,117			628,762	(967)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	105,354										105,354
Other comprehensive income (loss)	4,571											4,571
Share repurchases (in shares)							2,778
Share repurchases	(122,773)						$ (122,773)
Indirect repurchase of shares for minimum tax withholding (in shares)							188
Indirect repurchase of shares for minimum tax withholding	$ (7,289)						$ (7,289)
Restricted stock units and awards and Performance share units (in shares)					120	211
Restricted stock units and awards and Performance share units		$ 0	$ 0		$ 1	$ 2			$ (1)	$ (2)
Stock options exercised (in shares)	670			670
Stock options exercised	$ 10,035			$ 7				10,028
Share-based compensation	14,689							14,689
Business acquisitions (in shares)				107
Business acquisitions	$ 4,317			$ 1				4,316
Common stock, ending balances (in shares) at Dec. 31, 2022	136,295			136,295
Treasury stock, ending balance (in shares) at Dec. 31, 2022	86,115						86,115
Ending balance at Dec. 31, 2022	$ 713,452			$ 1,363			$ (824,778)	$ 799,147			$ 734,116	$ 3,604