Properties and Equipment (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	$ 1,180,105		$ 1,164,391
Less accumulated depreciation	225,973		203,856
Properties and equipment, net	954,132		960,535
Interest costs, capitalized during period	(155)	(132)
Pipelines and terminals [Member]
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	1,061,626		1,049,531
Land and right of way [Member]
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	63,196		63,248
Other [Member]
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	37,032		27,150
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	$ 18,251		$ 24,462

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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