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 (Loss) Income
Common stock, beginning balance (in shares) at Dec. 31, 2021				135,187
Treasury stock, beginning balance (in shares) at Dec. 31, 2021							83,149
Beginning 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	89,382										89,382
Other comprehensive income	2,405											2,405
Share repurchases (in shares)							884
Share repurchases	(35,554)						$ (35,554)
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)				119		211
Restricted stock units and awards and Performance share units	0		$ 0	$ 1		$ 2		(1)		$ (2)
Stock options exercised (in shares)				287
Stock options exercised	3,896			$ 3				3,893
Stock-based compensation	6,428							6,428
Business acquisitions (in shares)				19
Business acquisitions	707							707
Common stock, ending balance (in shares) at Jun. 30, 2022				135,823
Treasury stock, ending balance (in shares) at Jun. 30, 2022							84,221
Ending balance at Jun. 30, 2022	764,523			$ 1,358			$ (737,559)	781,142			718,144	1,438
Common stock, beginning balance (in shares) at Mar. 31, 2022				135,756
Treasury stock, beginning balance (in shares) at Mar. 31, 2022							83,462
Beginning balance at Mar. 31, 2022	759,848			$ 1,358			$ (707,088)	777,731			686,889	958
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	31,255										31,255
Other comprehensive income	480											480
Share repurchases (in shares)							736
Share repurchases	(29,555)						$ (29,555)
Indirect repurchase of shares for minimum tax withholding (in shares)							23
Indirect repurchase of shares for minimum tax withholding	(916)						$ (916)
Restricted stock units and awards and Performance share units (in shares)					27
Stock options exercised (in shares)				40
Stock options exercised	672							672
Stock-based compensation	2,739							2,739
Common stock, ending balance (in shares) at Jun. 30, 2022				135,823
Treasury stock, ending balance (in shares) at Jun. 30, 2022							84,221
Ending balance at Jun. 30, 2022	764,523			$ 1,358			$ (737,559)	781,142			718,144	1,438
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	100,023										100,023
Other comprehensive income	324											324
Share repurchases (in shares)							975
Share repurchases	(48,528)						$ (48,528)
Indirect repurchase of shares for minimum tax withholding (in shares)							169
Indirect repurchase of shares for minimum tax withholding	$ (8,224)						$ (8,224)
Restricted stock units and awards and Performance share units (in shares)					144	244
Restricted stock units and awards and Performance share units		$ 0	$ 0		$ 1	$ 2			$ (1)	$ (2)
Stock options exercised (in shares)	221			221
Stock options exercised	$ 4,252			$ 3				4,249
Stock-based compensation	6,619							6,619
Business acquisitions (in shares)				177
Business acquisitions	8,296			$ 2				8,294
Excise tax on share repurchases	(171)						$ (558)	387
Common stock, ending balance (in shares) at Jun. 30, 2023				137,081
Treasury stock, ending balance (in shares) at Jun. 30, 2023							87,259
Ending balance at Jun. 30, 2023	776,043			$ 1,371			$ (882,088)	818,693			834,139	3,928
Common stock, beginning balance (in shares) at Mar. 31, 2023				137,024
Treasury stock, beginning balance (in shares) at Mar. 31, 2023							86,712
Beginning balance at Mar. 31, 2023	771,930			$ 1,370			$ (853,793)	814,686			807,276	2,391
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	26,863										26,863
Other comprehensive income	1,537											1,537
Share repurchases (in shares)							547
Share repurchases	(27,737)						$ (27,737)
Restricted stock units and awards and Performance share units (in shares)					21
Stock options exercised (in shares)				32
Stock options exercised	623			$ 1				622
Stock-based compensation	2,788							2,788
Business acquisitions (in shares)				4
Business acquisitions	210							210
Excise tax on share repurchases	(171)						$ (558)	387
Common stock, ending balance (in shares) at Jun. 30, 2023				137,081
Treasury stock, ending balance (in shares) at Jun. 30, 2023							87,259
Ending balance at Jun. 30, 2023	$ 776,043			$ 1,371			$ (882,088)	$ 818,693			$ 834,139	$ 3,928