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REPORTABLE SEGMENTS (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) segment | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Segment results |  |  |  |  |  |  |  |  |  |  |
Fiscal Period Duration |  |  |  |  |  |  |  |  | 371 days | 364 days | 364 days
Number of reportable segments | segment |  |  |  |  |  |  |  |  | 2 |  |
Operating Revenue | $ 519.3 | $ 500.4 | $ 467.7 | $ 454.2 | $ 494.8 | $ 544.3 | $ 447.6 | $ 398.2 | $ 1,941.6 | $ 1,884.9 | $ 1,714.2
Operating Income | 36.3 | 46.2 | 36.1 | 34.6 | 45.9 | 71.8 | 33.7 | 44.9 | 153.2 | 196.3 | 140.0
Interest expense, net | (6.7) | (6.0) | (6.5) | (4.9) | (4.9) | (4.7) | (4.6) | (4.3) | (24.1) | (18.5) | (17.3)
Income before Income Taxes | 29.6 | 40.2 | 29.6 | 29.7 | 41.0 | 67.1 | 29.1 | 40.6 | 129.1 | 177.8 | 122.7
Income tax expense | (10.2) | (15.2) | (11.6) | (11.6) | (14.4) | (25.6) | (19.2) | (15.6) | (48.6) | (74.8) | (51.9)
Net Income | 19.4 | 25.0 | 18.0 | 18.1 | 26.6 | 41.5 | 9.9 | 25.0 | 80.5 | 103.0 | 70.8
Assets | 2,015.5 |  |  |  | 1,669.8 |  |  |  | 2,015.5 | 1,669.8 | 1,401.8
Capital Expenditures |  |  |  |  |  |  |  |  | 179.4 | 67.8 | 27.9
Depreciation and Amortization |  |  |  |  |  |  |  |  | 97.1 | 83.4 | 69.7
Deferred dry-docking amortization |  |  |  |  |  |  |  |  | (38.9) | (23.1) | (21.1)
Depreciations and amortizations including deferred dry-docking amortizations |  |  |  |  |  |  |  |  | $ 136.0 | $ 106.5 | $ 90.8
Ocean Transportation |  |  |  |  |  |  |  |  |  |  |
Segment results |  |  |  |  |  |  |  |  |  |  |
Fiscal Period Duration |  |  |  |  |  |  |  |  | 371 days | 364 days | 364 days
Operating Revenue | 406.1 | 398.0 | 370.9 | 366.1 | 401.0 | 444.8 | 346.7 | 305.5 | $ 1,541.1 | $ 1,498.0 | $ 1,278.4
Operating Income | 31.7 | 42.7 | 33.9 | 33.0 | 43.6 | 68.9 | 31.4 | 43.9 | 141.3 | 187.8 | 131.1
Assets | 1,722.2 |  |  |  | 1,601.0 |  |  |  | 1,722.2 | 1,601.0 | 1,313.9
Capital Expenditures |  |  |  |  |  |  |  |  | 179.1 | 67.5 | 27.8
Depreciation and Amortization |  |  |  |  |  |  |  |  | 92.6 | 81.4 | 66.6
Deferred dry-docking amortization |  |  |  |  |  |  |  |  | 38.9 | 23.1 | 21.1
Ocean Transportation | SSAT |  |  |  |  |  |  |  |  |  |  |
Segment results |  |  |  |  |  |  |  |  |  |  |
Equity in earnings from affiliates | 15.8 |  |  |  | 16.5 |  |  |  | 15.8 | 16.5 | 6.6
Equity method investments | 82.4 |  |  |  | 66.4 |  |  |  | 82.4 | 66.4 | 64.4
Logistics |  |  |  |  |  |  |  |  |  |  |
Segment results |  |  |  |  |  |  |  |  |  |  |
Operating Revenue | 113.2 | 102.4 | 96.8 | 88.1 | 93.8 | 99.5 | 100.9 | 92.7 | 400.5 | 386.9 | 435.8
Operating Income | 4.6 | $ 3.5 | $ 2.2 | $ 1.6 | 2.3 | $ 2.9 | $ 2.3 | $ 1.0 | 11.9 | 8.5 | 8.9
Assets | $ 293.3 |  |  |  | $ 68.8 |  |  |  | 293.3 | 68.8 | 87.9
Capital Expenditures |  |  |  |  |  |  |  |  | 0.3 | 0.3 | 0.1
Depreciation and Amortization |  |  |  |  |  |  |  |  | $ 4.5 | $ 2.0 | $ 3.1

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