Equity Investments (Tables)

3 Months Ended

Mar. 31, 2013

Equity Investments [Abstract]

Distributions From Equity Investments

		Three Months Ended
		March 31,
		2013		2012
Deepwater Gateway	$	1,500	$	2,150
Independence Hub		1,160		4,200
Total	$	2,660	$	6,350

Schedule Of Summarized Aggregated Financial Information Related To The Subsidiaries

		Three Months Ended
		March 31,
		2013		2012
Revenues	$	9,025	$	23,018
Operating income		3,296		17,379
Net income		3,296		17,379

		March 31,		December 31,
		2013		2012
Current assets	$	16,776	$	16,682
Total assets		531,749		537,251
Current liabilities		635		706
Total liabilities		5,322		5,320