Note 2 - Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Property, Plant and Equipment [Table Text Block]

	2021			2020			Estimated Life (Years)
Land	$	156,169		$	136,024				–
Buildings and improvements		552,965			495,808			10	–	39
Leasehold improvements		39,665			38,767			2	–	39
Machinery and shop equipment		92,762			87,090			5	–	20
Furniture, fixtures and computers		84,728			81,834			3	–	15
Transportation equipment		103,611			96,319			3	–	15
Lease and rental vehicles		947,318			905,465			1	–	8
Construction in progress		6,664			2,989
Accumulated depreciation and amortization		(705,675	)		(640,577	)
Total	$	1,278,207		$	1,203,719

Schedule of Goodwill [Table Text Block]

Balance December 31, 2020	$	292,142
Acquisitions During 2021		78,189
Balance December 31, 2021	$	370,331

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2021			2020			2019
Expected stock volatility		36.03	%		33.11	%		31.29	%
Weighted-average stock volatility		36.03	%		33.11	%		31.29	%
Expected dividend yield		1.65	%		1.20	%		1.13	%
Risk-free interest rate		1.07	%		0.80	%		2.45	%
Expected life (years)		6.0			6.0			6.0
Weighted-average fair value of stock options granted	$	14.77		$	6.36		$	8.37