Business Combinations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business acquisition [Line Items]
Investments in businesses	$ 34,077	$ 46,229	$ 18,399
Liabilities assumed	5,285	15,592	3,713
Debt issued for purchases of businesses	(7,046)	(7,445)	(2,961)
Goodwill	14,758	14,255	7,723
Goodwill acquired during period, tax deductible amount	14,758	14,255	2,228
Cash	249	1,365	292
Accounts receivable	211	10,794	509
Operating supplies	0	6,351	0
business combination recognized identifiable assets acquired and liabilities assumed operating supplies	1,538	48	1,044
Prepaid expense	141	126	203
Equipment	7,220	2,309	4,049
Other assets	2,658	412	1,574
Intangible assets	7,302	10,569	3,005
Cash paid	$ 21,746	$ 23,192	$ 11,725
Customer Lists [Member]
Business acquisition [Line Items]
Intangible assets, estimated useful life (in years)	7 years
Tradenames
Business acquisition [Line Items]
Intangible assets, estimated useful life (in years)	7 years
Noncompete agreements [Member]
Business acquisition [Line Items]
Intangible assets, estimated useful life (in years)	5 years