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Amended and Restated Credit Agreement (Details) (USD $)						0 Months Ended		0 Months Ended
	Sep. 30, 2013	Dec. 31, 2012		Jul. 09, 2013 Line of Credit [Member] Revolving Credit Facility [Member]	Nov. 07, 2012 Line of Credit [Member] Revolving Credit Facility [Member]	Jul. 09, 2013 Line of Credit [Member]	Sep. 30, 2013 Line of Credit [Member]	Jul. 09, 2013 Line of Credit [Member] London Interbank Offered Rate (LIBOR) [Member] United States of America, Dollars	Jul. 09, 2013 Line of Credit [Member] Prime Rate [Member] United States of America, Dollars	Jul. 09, 2013 Line of Credit [Member] Prime Rate [Member] Canada, Dollars	Jul. 09, 2013 Line of Credit [Member] Canadian Dealer Offered Rate (CDOR) [Member] Canada, Dollars
Line of Credit Facility [Line Items]
Maximum Borrowing Capacity				$ 400,000,000	$ 175,000,000
Maximum Borrowing Capacity under Accordion Feature				450,000,000
Debt Instrument, Description of Variable Rate Basis								LIBOR	U.S. dollar prime rate	Canadian dollar prime rate,	CDOR
Weighted Average Interest Rate							2.00%
Unused Capacity, Commitment Fee Percentage						0.25%
Holdings Note Principal amount outstanding							102,000,000
Borrowings outstanding	161,000,000	90,000,000	[1]				161,000,000
Letters of Credit Outstanding	13,500,000
Remaining Borrowing Capacity							$ 225,500,000
[1] Includes the historical balances of the Tyler Terminal and Tank Assets. See Notes 1 and 2 for further discussion.

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- Definition

Maximum Borrowing Capacity under Accordion Feature

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- Definition

Related Party Limiited Guaranty of Debt

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X

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

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- Definition

Weighted average interest rate of debt outstanding.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Glossary Line-of-Credit Arrangement

-URI http://asc.fasb.org/extlink&oid=6517033



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-Publisher FASB

-Name Accounting Standards Codification

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