CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 20,102	$ 5,634
Accounts receivable:
Trade - less allowance for doubtful accounts of $8,930 ($7,240 in 2016)	452,222	297,177
Other	106,231	95,327
Inventories - at lower of average cost or market	315,729	185,402
Prepaid expenses and other current assets	62,798	49,411
Total current assets	957,082	632,951
Property and equipment:
Marine transportation equipment	3,941,379	4,071,972
Land, buildings and equipment	419,503	256,925
Property and equipment	4,360,882	4,328,897
Accumulated depreciation	1,401,617	1,407,523
Property and equipment - net	2,959,265	2,921,374
Investment in affiliates	1,890	2,622
Goodwill	935,135	598,131
Other intangibles, net	232,808	87,306
Other assets	41,247	47,511
Total assets	5,127,427	4,289,895
Current liabilities:
Bank notes payable	3	0
Income taxes payable	191	3,288
Accounts payable	222,005	134,571
Accrued liabilities:
Interest	6,099	5,397
Insurance premiums and claims	108,651	123,371
Employee compensation	45,193	26,916
Taxes - other than on income	22,791	15,481
Other	27,026	13,313
Deferred revenues	48,347	36,001
Total current liabilities	480,306	358,338
Long-term debt - less current portion	992,403	722,802
Deferred income taxes	468,451	705,453
Other long-term liabilities	72,044	90,435
Total long-term liabilities	1,532,898	1,518,690
Contingencies and commitments
Kirby stockholders' equity:
Common stock, $.10 par value per share. Authorized 120,000,000 shares, issued 65,472,000 in 2017 and 59,776,000 in 2016	6,547	5,978
Additional paid-in capital	802,961	432,459
Accumulated other comprehensive income - net	(32,405)	(51,007)
Retained earnings	2,646,937	2,342,236
Treasury stock - at cost, 5,783,000 shares in 2017 and 5,921,000 in 2016	(313,220)	(320,348)
Total Kirby stockholders' equity	3,110,820	2,409,318
Noncontrolling interests	3,403	3,549
Total equity	3,114,223	2,412,867
Total liabilities and equity	$ 5,127,427	$ 4,289,895