CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 75,216	$ 32,577
Accounts receivable:
Trade - less allowance for doubtful accounts	529,141	526,691
Other	55,949	52,025
Inventories - net	446,803	454,389
Prepaid expense and other current assets	68,369	69,479
Total current assets	1,175,478	1,135,161
Property and equipment	5,880,403	5,824,038
Accumulated depreciation	(1,997,082)	(1,962,933)
Property and equipment - net	3,883,321	3,861,105
Operating lease right-of-use assets	149,412	152,216
Goodwill	438,748	438,748
Other intangibles, net	40,797	42,927
Other assets	88,081	92,040
Total assets	5,775,837	5,722,197
Current liabilities:
Bank notes payable	8,643	8,068
Income taxes payable	11,252	1,486
Accounts payable	249,644	269,378
Accrued liabilities	194,819	228,946
Current portion of operating lease liabilities	32,601	33,340
Deferred revenues	153,435	134,577
Total current liabilities	650,394	675,795
Long-term debt, net - less current portion	1,051,822	1,008,527
Deferred income taxes	705,834	696,557
Operating lease liabilities - less current portion	136,980	138,811
Other long-term liabilities	14,066	15,830
Total long-term liabilities	1,908,702	1,859,725
Contingencies and commitments	0	0
Kirby stockholders' equity:
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	6,547	6,547
Additional paid-in capital	859,150	863,963
Accumulated other comprehensive income - net	34,611	35,006
Retained earnings	2,761,733	2,691,665
Treasury stock - at cost, 7.2 million shares at March 31, 2024 and 6.8 million at December 31, 2023	(446,393)	(411,750)
Total Kirby stockholders' equity	3,215,648	3,185,431
Noncontrolling interests	1,093	1,246
Total equity	3,216,741	3,186,677
Total liabilities and equity	$ 5,775,837	$ 5,722,197