Other Intangible, Net and Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense	$ 1,000	$ 600	$ 2,200	$ 1,800
Carrying amount of goodwill	316,799		316,799		$ 168,295
Finite-Lived Intangible Assets [Line Items]
Gross Amount	92,920		92,920
Accumulated Amortization	21,066		21,066
Net Intangible Assets	71,854		71,854
Gross Intangible Assets Acquired, Smith Transport			28,100
Finite-lived Intangible Assets Acquired, Smith Transport			20,100
Indefinite-lived Intangible Assets Acquired, Smith Transport			8,000
Gross Intangible Assets Acquired, CFI	55,100		55,100
Finite-lived Intangible Assets Acquired, CFI	31,600		31,600
Indefinite-lived Intangible Assets Acquired, CFI	23,500		23,500
Goodwill, Acquired During Period, Smith Transport	1,600		42,129
Goodwill, Acquired During Period, CFI	106,375		106,375
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	74,188		74,188
Accumulated Amortization	7,260		7,260
Net Intangible Assets	66,928		66,928
Tradename
Finite-Lived Intangible Assets [Line Items]
Gross Amount	12,900		12,900
Accumulated Amortization	9,580		9,580
Net Intangible Assets	3,320		3,320
Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Gross Amount	5,832		5,832
Accumulated Amortization	4,226		4,226
Net Intangible Assets	$ 1,606		$ 1,606
Maximum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			20 years
Maximum [Member] | Tradename
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			6 years
Maximum [Member] | Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			10 years
Minimum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			15 years
Minimum [Member] | Tradename
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			6 months
Minimum [Member] | Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			1 year