CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND TEMPORARY EQUITY - REDEEMABLE NONCONTROLLING INTEREST - USD ($) $ in Thousands	Total	Common Stock	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning balance at Dec. 31, 2022	$ 1,443,635	$ 805	$ 129,837	$ 1,875,873	$ (11,292)	$ (551,588)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Werner	65,105			65,105
Net (loss) income attributable to noncontrolling interest	0
Other comprehensive income (loss)	4,669				4,669
Dividends on common stock	(17,113)			(17,113)
Equity compensation activity	(5,517)		(5,434)			(83)
Non-cash equity compensation expense	6,291		6,291
Ending balance at Jun. 30, 2023	1,497,070	805	130,694	1,923,865	(6,623)	(551,671)
Beginning balance at Dec. 31, 2022	38,699
Increase (Decrease) in Temporary Equity [Roll Forward]
Net (loss) income attributable to noncontrolling interest	449
Ending balance at Jun. 30, 2023	39,148
Beginning balance at Mar. 31, 2023	1,470,537	805	128,050	1,902,858	(9,264)	(551,912)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Werner	29,881			29,881
Net (loss) income attributable to noncontrolling interest	0
Other comprehensive income (loss)	2,641				2,641
Dividends on common stock	(8,874)			(8,874)
Equity compensation activity	(3)		(244)			241
Non-cash equity compensation expense	2,888		2,888
Ending balance at Jun. 30, 2023	1,497,070	805	130,694	1,923,865	(6,623)	(551,671)
Beginning balance at Mar. 31, 2023	39,009
Increase (Decrease) in Temporary Equity [Roll Forward]
Net (loss) income attributable to noncontrolling interest	139
Ending balance at Jun. 30, 2023	39,148
Beginning balance at Dec. 31, 2023	1,528,339	805	134,894	1,953,385	(9,684)	(551,061)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Werner	15,777			15,777
Net (loss) income attributable to noncontrolling interest	0
Other comprehensive income (loss)	(4,721)				(4,721)
Repurchases of common stock	(67,086)					(67,086)
Dividends on common stock	(17,531)			(17,531)
Equity compensation activity	(4,172)		(4,746)			574
Non-cash equity compensation expense	4,621		4,621
Ending balance at Jun. 30, 2024	1,455,227	805	134,769	1,951,631	(14,405)	(617,573)
Beginning balance at Dec. 31, 2023	38,607
Increase (Decrease) in Temporary Equity [Roll Forward]
Net (loss) income attributable to noncontrolling interest	(329)
Ending balance at Jun. 30, 2024	38,278
Beginning balance at Mar. 31, 2024	1,518,004	805	132,722	1,950,819	(9,066)	(557,276)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Werner	9,465			9,465
Net (loss) income attributable to noncontrolling interest	0
Other comprehensive income (loss)	(5,339)				(5,339)
Repurchases of common stock	(60,536)					(60,536)
Dividends on common stock	(8,653)			(8,653)
Equity compensation activity	(85)		(324)			239
Non-cash equity compensation expense	2,371		2,371
Ending balance at Jun. 30, 2024	1,455,227	$ 805	$ 134,769	$ 1,951,631	$ (14,405)	$ (617,573)
Beginning balance at Mar. 31, 2024	38,543
Increase (Decrease) in Temporary Equity [Roll Forward]
Net (loss) income attributable to noncontrolling interest	(265)
Ending balance at Jun. 30, 2024	$ 38,278