Consolidated And Combined Statements Of Cash Flows (Parenthetical) (USD $) In Thousands, unless otherwise specified	8 Months Ended	12 Months Ended	4 Months Ended	12 Months Ended
	Dec. 31, 2010 The Company [Member]	Dec. 31, 2011 The Company [Member]	Apr. 27, 2010 The Predecessor [Member]	Dec. 31, 2009 The Predecessor [Member]
1031 exchange net gain on sale of real estate	$ 0	$ 4,518	$ 0	$ 0