Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash Flows Provided by Operating Activities:
Net income	$ 3.4	$ 9.1
Reconciling adjustments:
Depreciation and amortization	17.5	17.5
Deferred income taxes	0.7	(3.5)
Gain on disposal of property	(0.2)	(0.1)
Post-retirement expense	(0.3)	0.5
Share-based compensation expense	1.8	1.3
Equity in income from terminal joint venture	(0.2)	(0.2)
Tax benefit from equity issuance	0.1
Changes in assets and liabilities:
Accounts receivable	4.4	7.3
Deferred dry-docking payments	(7.3)	(1.2)
Deferred dry-docking amortization	5.3	5.4
Prepaid expenses and other assets	0.8	4.2
Accounts payable and accrued liabilities	4.7	(1.9)
Other liabilities	(0.6)	(3.4)
Net cash provided by operating activities	30.1	35.0
Cash Flows Used in Investing Activities:
Capital expenditures	(4.9)	(6.3)
Proceeds from disposal of property and equipment	0.4	1.0
Deposits into Capital Construction Fund	(2.2)	(2.2)
Withdrawals from Capital Construction Fund	2.2	2.2
Payments for acquisitions		(9.6)
Net cash used in investing activities	(4.5)	(14.9)
Cash Flows Used in Financing Activities:
Proceeds from issuance of debt	100.0	21.0
Repayments of Debt	(2.5)	(42.5)
Proceeds from issuance of capital stock	0.7	0.4
Tax Withholding related to net share settlements of restricted stock units	(1.7)	(1.4)
Dividends paid	(6.9)	(6.5)
Net cash provided by (used in) financing activities	89.6	(29.0)
Net Increase (Decrease) in Cash and Cash Equivalents	115.2	(8.9)
Cash and cash equivalents, beginning of the year	114.5	19.9
Cash and cash equivalents, end of the year	229.7	11.0
Supplemental Cash Flow Information:
Interest paid	1.9	2.1
Income tax refund	(0.9)
Non-cash Information:
Capital expenditures included in accounts payable and accrued liabilities	1.3	2.0
Capital lease obligations		$ 2.9