CONDENSED STATEMENTS OF EARNINGS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues:
Marine transportation	$ 448,744	$ 436,181	$ 1,341,260	$ 1,278,567
Diesel engine services	231,977	114,924	556,761	395,231
Total revenues	680,721	551,105	1,898,021	1,673,798
Costs and expenses:
Costs of sales and operating expenses	457,177	344,396	1,243,866	1,083,257
Selling, general and administrative	49,331	43,241	154,994	128,335
Taxes, other than on income	3,701	3,714	12,905	12,589
Depreciation and amortization	42,433	41,640	124,876	122,907
Gain on disposition of assets	(47)	(223)	(625)	(728)
Total costs and expenses	552,595	432,768	1,536,016	1,346,360
Operating income	128,126	118,337	362,005	327,438
Other income (expense)	27	60	(86)	236
Interest expense	(5,225)	(6,694)	(16,312)	(21,901)
Earnings before taxes on income	122,928	111,703	345,607	305,773
Provision for taxes on income	(45,715)	(42,007)	(129,472)	(114,733)
Net earnings	77,213	69,696	216,135	191,040
Less: Net earnings attributable to noncontrolling interests	(496)	(573)	(2,180)	(2,246)
Net earnings attributable to Kirby	$ 76,717	$ 69,123	$ 213,955	$ 188,794
Net earnings per share attributable to Kirby common stockholders:
Basic (in dollars per share)	$ 1.34	$ 1.22	$ 3.75	$ 3.33
Diluted (in dollars per share)	$ 1.34	$ 1.21	$ 3.74	$ 3.32