Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Significant Accounting Policies [Abstract]

Property, Plant and Equipment [Table Text Block]

Lives of the assets are as follows:
	Years
Land improvements and buildings	5-30
Leasehold improvements	5-25
Furniture and fixtures	3-5
Shop and service equipment	3-10
Revenue equipment	5-7

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

A reconciliation of the numerator (net income) and denominator (weighted average number of shares outstanding) of the basic and diluted earnings per share (“EPS”) for 2019, 2018, and 2017 is as follows (in thousands, except per share data):

	2019
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	72,967	81,980	$	0.89
Effect of restricted stock	—		44
Diluted EPS	$	72,967	82,024	$	0.89

	2018
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	72,677	82,378	$	0.88
Effect of restricted stock	—		32
Diluted EPS	$	72,677	82,410	$	0.88

	2017
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	75,173	83,298	$	0.90
Effect of restricted stock	—		38
Diluted EPS	$	75,173	83,336	$	0.90