GOODWILL AND INTANGIBLES ASSETS (Tables)

12 Months Ended

Dec. 31, 2017

GOODWILL AND INTANGIBLES ASSETS

Schedule of goodwill

	Goodwill
	Ocean
(In millions)	Transportation		Logistics		Total
Balance at December 31, 2015	$	215.0	$	26.6	$	241.6
Additions - Horizon Acquisition (purchase price adjustment)		3.5		—		3.5
Additions - Span Alaska Acquisition		—		78.6		78.6
Balance at December 31, 2016		218.5		105.2		323.7
Additions		—		—		—
Balance at December 31, 2017	$	218.5	$	105.2	$	323.7

Schedule of intangible assets

	As of December 31, 2017						As of December 31, 2016
	Gross		Accumulated				Gross		Accumulated
(In millions)	Amount		Amortization		Net Book Value		Amount		Amortization		Net Book Value
Ocean Transportation - Customer relationships	$	140.6	$	17.8	$	122.8	$	140.6	$	11.0	$	129.6
Logistics:
Customer relationships		90.1		15.0		75.1		90.1		10.4		79.7
Trade name		27.3		—		27.3		27.3		—		27.3
Total Logistics		117.4		15.0		102.4		117.4		10.4		107.0
Total	$	258.0	$	32.8	$	225.2	$	258.0	$	21.4	$	236.6

Schedule of intangible asset related amortization expense

	Years Ended December 31,
(In millions)	2017		2016		2015
Amortization expense	$	11.4	$	9.1	$	4.4

Schedule of estimated amortization expenses related to intangible assets

As of December 31, 2017, estimated amortization expenses related to intangible assets – customer relationships during the next five years and thereafter are as follows:

	Customer
Year (in millions)	Relationships
2018	$	11.2
2019		11.0
2020		11.0
2021		10.9
2022		10.7
Thereafter		143.1
Total	$	197.9