EARNINGS (LOSS) PER SHARE - Schedule of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Earnings Per Share [Abstract]
Net loss attributable to Werner	$ (4,262)	$ (10,098)
Weighted average common shares outstanding (in shares)	59,910	61,890
Dilutive effect of stock-based awards (in shares)	0	0
Shares used in computing diluted loss per share (in shares)	59,910	61,890
Basic loss per share (in dollars per share)	$ (0.07)	$ (0.16)
Diluted loss per share (in dollars per share)	$ (0.07)	$ (0.16)