CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 7,800	$ 20,102
Accounts receivable:
Trade - less allowance for doubtful accounts of $10,024 ($8,930 in 2017)	417,644	452,222
Other	104,239	106,231
Inventories - at lower of average cost or market	507,441	315,729
Prepaid expenses and other current assets	59,365	62,798
Total current assets	1,096,489	957,082
Property and equipment:
Marine transportation equipment	4,477,718	3,848,334
Land, buildings and equipment	534,106	512,548
Property and equipment	5,011,824	4,360,882
Accumulated depreciation	1,472,022	1,401,617
Property and equipment - net	3,539,802	2,959,265
Investment in affiliates	2,495	1,890
Goodwill	953,826	935,135
Other intangibles - net	224,197	232,808
Other assets	54,785	41,247
Total assets	5,871,594	5,127,427
Current liabilities:
Bank notes payable	19	3
Income taxes payable	2,794	191
Accounts payable	278,057	222,005
Accrued liabilities:
Interest	13,171	6,099
Insurance premiums and claims	109,634	108,651
Employee compensation	53,089	45,193
Taxes - other than on income	38,680	22,791
Other	32,215	27,026
Deferred revenues	80,123	48,347
Total current liabilities	607,782	480,306
Long-term debt - less current portion	1,410,169	992,403
Deferred income taxes	542,785	468,451
Other long-term liabilities	94,557	72,044
Total long-term liabilities	2,047,511	1,532,898
Contingencies and commitments
Kirby stockholders' equity:
Common stock, $.10 par value per share. Authorized 120,000,000 shares, issued 65,472,000 in 2018 and 2017	6,547	6,547
Additional paid-in capital	823,347	802,961
Accumulated other comprehensive income - net	(33,511)	(32,405)
Retained earnings	2,723,592	2,646,937
Treasury stock - at cost, 5,608,000 shares in 2018 and 5,783,000 shares in 2017	(306,788)	(313,220)
Total Kirby stockholders' equity	3,213,187	3,110,820
Noncontrolling interests	3,114	3,403
Total equity	3,216,301	3,114,223
Total liabilities and equity	$ 5,871,594	$ 5,127,427