Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Summary of Balances of Property and Equipment - Net

The following table summarizes the balances of property and equipment – net (in thousands):

	December 31,
	2023			2022
Land	$	39,567		$	38,551
Marine transportation equipment		5,029,653			4,837,379
Buildings and other equipment		641,871			505,942
Construction in progress		112,947			70,271
	$	5,824,038		$	5,452,143
Accumulated depreciation		(1,962,933	)		(1,818,681	)
Property and equipment – net	$	3,861,105		$	3,633,462

Changes in Goodwill

The following table summarizes the changes in goodwill (in thousands):

	Marine Transportation			Distribution and Services			Total
Balance at December 31, 2022 (gross)		505,784			560,155			1,065,939
Accumulated impairment and amortization		(237,626	)		(389,565	)		(627,191	)
Balance at December 31, 2022 and 2023	$	268,158		$	170,590		$	438,748

Other Intangible Assets and Other Intangible Liabilities

The following table summarizes the balances of other intangible assets and other intangible liabilities (in thousands):

	December 31,
	2023			2022
Other intangible assets – gross	$	184,622		$	203,242
Accumulated amortization		(141,695	)		(151,779	)
Other intangible assets – net	$	42,927		$	51,463
Other intangible liabilities – gross	$	8,800		$	13,860
Accumulated amortization		(8,800	)		(13,280	)
Other intangible liabilities – net	$	—		$	580