Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income attributable to Werner	$ 6,312	$ 35,224
Weighted average common shares outstanding (in shares)	63,472	63,306
Dilutive effect of stock-based awards (in shares)	255	389
Shares used in computing diluted earnings per share (in shares)	63,727	63,695
Basic earnings per share (in dollars per share)	$ 0.10	$ 0.56
Diluted earnings per share (in dollars per share)	$ 0.10	$ 0.55