CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 23,504	$ 55,925	$ 89,058	$ 184,569
Other comprehensive income (loss):
Foreign currency translation adjustments	(1,333)	(708)	4,410	398
Change in fair value of interest rate swaps, net of tax	(694)	1,857	(1,768)	6,771
Other comprehensive income (loss), net	(2,027)	1,149	2,642	7,169
Comprehensive income	21,477	57,074	91,700	191,738
Comprehensive loss (income) attributable to noncontrolling interest	200	(874)	(249)	(3,479)
Comprehensive income attributable to Werner	$ 21,677	$ 56,200	$ 91,451	$ 188,259