Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011
Supplemental Cash Flow Information [Abstract]
Cash paid during the period for interest	$ 33,322		$ 13,236
Change in accrued capital expenditures	(6,660)		2,165
Interest rate swaps novated from the Fund			2,875
General and administrative expense allocated from the Fund	22,224		21,252
Amortization of increasing rate distributions	$ 11,140	[1]

[1] Amortization of increasing rate distributions is offset in the preferred unitholder’s capital account by a non-cash distribution.