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EQUITY INVESTMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Equity investments
Earnings from equity investments	$ 1,389	$ 553	$ 4,971	$ 4,287
West Shore Pipe Line Company
Equity investments
Earnings from equity investments	1,569	(220)	4,142	2,884
Muskegon Pipeline LLC
Equity investments
Earnings from equity investments	(377)	303	254	722
Transport4, LLC
Equity investments
Earnings from equity investments	90	113	286	191
South Portland Terminal LLC
Equity investments
Earnings from equity investments	$ 107	$ 357	$ 289	$ 490

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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