Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2010
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	$ 91,105	$ 72,589	[1]	$ 56,229	[1]
Allocation of net loss attributable to Predecessors	4,200	6,351	[1]	70	[1]
Net income before noncontrolling interests	95,305	78,940	[1]	56,299	[1]
Other comprehensive income (loss):
Change in fair value of cash flow hedge	(2,910)	3,521	[1]	(1,961)	[1]
Amortization of unrealized loss attributable to discontinued cash flow hedge	5,095	41	[1]	0	[1]
Reclassification adjustment to net income on partial settlement of cash flow hedge	0	0	[1]	1,076	[1]
Other comprehensive income (loss)	2,185	3,562	[1]	(885)	[1]
Comprehensive income before noncontrolling interest	97,490	82,502	[1]	55,414	[1]
Allocation of comprehensive (income) loss to noncontrolling interests	(1,153)	859	[1]	24	[1]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 96,337	$ 83,361		$ 55,438

[1] (1) Restated as described in Note 2.