Acquisition - Components of Other Intangible Acquired (Detail) - Choptank Transport, LLC Member $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Customer Relationships [Member]
Other Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	$ 36,300
Finite-lived intangible assets, Accumulated Amortization	1,815
Finite-lived intangible assets, Net Carrying Value	$ 34,485
Intangible assets estimated useful life	15 years
Carrier Network [Member]
Other Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	$ 14,400
Finite-lived intangible assets, Accumulated Amortization	2,700
Finite-lived intangible assets, Net Carrying Value	$ 11,700
Intangible assets estimated useful life	4 years
Developed Technology [Member]
Other Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	$ 6,500
Finite-lived intangible assets, Accumulated Amortization	696
Finite-lived intangible assets, Net Carrying Value	$ 5,804
Intangible assets estimated useful life	7 years
Trade Name [Member]
Other Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	$ 3,300
Finite-lived intangible assets, Accumulated Amortization	1,650
Finite-lived intangible assets, Net Carrying Value	$ 1,650
Intangible assets estimated useful life	18 months