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CONDENSED STATEMENTS OF EARNINGS (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Revenues: |  |  |  |
Total revenues | $ 666,809 | $ 704,845 | $ 2,182,472 | $ 2,249,204
Costs and expenses: |  |  |  |
Costs of sales and operating expenses | 458,514 | 498,421 | 1,558,664 | 1,640,366
Selling, general and administrative | 64,656 | 70,032 | 206,602 | 239,416
Taxes, other than on income | 10,909 | 10,523 | 31,486 | 29,610
Depreciation and amortization | 54,455 | 57,930 | 164,771 | 167,640
(Gain) loss on disposition of assets | 374 | (18) | (4,901) | (2,358)
Total costs and expenses | 588,908 | 636,888 | 1,956,622 | 2,074,674
Operating income | 77,901 | 67,957 | 225,850 | 174,530
Other income | 864 | 1,454 | 2,677 | 4,586
Interest expense | (14,310) | (12,345) | (43,026) | (34,665)
Earnings before taxes on income | 64,455 | 57,066 | 185,501 | 144,451
Provision for taxes on income | (16,305) | (15,116) | (45,454) | (41,042)
Net earnings | 48,150 | 41,950 | 140,047 | 103,409
Less: Net earnings attributable to noncontrolling interests | (163) | (134) | (477) | (520)
Net earnings attributable to Kirby | $ 47,987 | $ 41,816 | $ 139,570 | $ 102,889
Net earnings per share attributable to Kirby common stockholders: |  |  |  |
Basic (in dollars per share) | $ 0.80 | $ 0.70 | $ 2.33 | $ 1.72
Diluted (in dollars per share) | $ 0.80 | $ 0.70 | $ 2.32 | $ 1.72
Marine Transportation [Member] |  |  |  |
Revenues: |  |  |  |
Total revenues | $ 412,665 | $ 382,040 | $ 1,185,072 | $ 1,100,606
Distribution and Services [Member] |  |  |  |
Revenues: |  |  |  |
Total revenues | $ 254,144 | $ 322,805 | $ 997,400 | $ 1,148,598

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- Definition All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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