CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 24,299	$ 4,022
Accounts receivable:
Trade - less allowance for doubtful accounts of $8,887 ($5,055 in 2013)	417,325	311,549
Other	115,598	43,053
Inventories - net, at lower of average cost or market	192,354	135,887
Prepaid expenses and other current assets	43,016	40,037
Deferred income taxes	10,562	9,458
Total current assets	803,154	544,006
Property and equipment:
Marine transportation equipment	3,495,705	3,170,433
Land, buildings and equipment	221,693	205,460
Property and equipment	3,717,398	3,375,893
Accumulated depreciation	1,127,900	1,005,090
Property and equipment - net	2,589,498	2,370,803
Investment in affiliates	2,539	2,156
Goodwill	591,405	591,405
Other assets	155,313	174,147
Total assets	4,141,909	3,682,517
Current liabilities:
Current portion of long-term debt	116,700	0
Income taxes payable	3,470	2,915
Accounts payable	222,020	177,375
Accrued liabilities:
Interest	5,610	5,494
Insurance premiums and claims	121,989	49,162
Employee compensation	42,056	42,613
Taxes - other than on income	13,694	12,160
Other	17,684	19,572
Deferred revenues	50,804	36,698
Total current liabilities	594,027	345,989
Long-term debt - less current portion	600,000	749,150
Deferred income taxes	595,769	544,110
Other long-term liabilities	87,200	21,115
Total long-term liabilities	1,282,969	1,314,375
Contingencies and commitments
Kirby stockholders' equity:
Common stock, $.10 par value per share. Authorized 120,000,000 shares, issued 59,776,000 in 2014 and 2013	5,978	5,978
Additional paid-in capital	428,475	410,615
Accumulated other comprehensive income - net	(61,037)	(16,793)
Retained earnings	1,974,146	1,692,140
Treasury stock - at cost, 2,906,000 shares in 2014 and 2,930,000 in 2013	(93,526)	(81,254)
Total Kirby stockholders' equity	2,254,036	2,010,686
Noncontrolling interests	10,877	11,467
Total equity	2,264,913	2,022,153
Total liabilities and equity	$ 4,141,909	$ 3,682,517