Summary of Significant Accounting Polices (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of Estimated Useful Life

For financial reporting purposes, assets are generally depreciated using the following estimated useful lives and salvage values:

	Lives	Salvage Values
Building and improvements	30 years	0%
Tractors	80 months	$0 - $10,000
Trailers	12 years	$1,000 - $6,000
Service and other equipment	3-10 years	0%

Schedule Of Basic and Diluted Earnings Per Share

The computation of basic and diluted earnings per share is shown below (in thousands, except per share amounts).

	Years Ended December 31,
	2021		2020		2019
Net income attributable to Werner	$	259,052	$	169,078	$	166,944
Weighted average common shares outstanding	67,434		69,018		69,567
Dilutive effect of stock-based awards	421		409		459
Shares used in computing diluted earnings per share	67,855		69,427		70,026
Basic earnings per share	$	3.84	$	2.45	$	2.40
Diluted earnings per share	$	3.82	$	2.44	$	2.38