Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	Approximate	Cost
	Lives	2019		2018
Land and land improvements		$	15,229	$	22,130
Buildings and building improvements	10 − 40 years		56,008		85,317
Revenue and service equipment	3 − 15 years		645,808		648,648
Furniture and equipment	3 − 7 years		48,682		47,482
Leasehold improvements	lesser of useful life or lease terms		24,324		23,027
Computer software	1 − 7 years		90,050		71,926
		$	880,101	$	898,530