Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Supplemental Cash Flow Information [Abstract]
Cash paid during the period for interest	$ 22,647		$ 16,392
Change in accrued capital expenditures	11,565		(1,414)
General and administrative expense allocated from the Fund			18,019
Distributions to the Predecessor			(18,884)
Amortization of increasing rate distributions	$ 7,697	[1]	$ 7,389	[1]

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