Debt (Details Textual) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended		1 Months Ended		12 Months Ended		1 Months Ended				12 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended
	Dec. 31, 2010	Oct. 18, 2010	Dec. 31, 2012	Dec. 31, 2011	Jan. 31, 2013 Subsequent Event [Member]	Jan. 31, 2013 Subsequent Event [Member] Line Of Credit [Member]	Dec. 31, 2012 Successor [Member]	Dec. 31, 2011 Successor [Member]	Jan. 31, 2013 Minimum [Member] Subsequent Event [Member]	Jan. 31, 2013 Minimum [Member] Term Loan [Member] Subsequent Event [Member]	Jan. 31, 2013 Maximum [Member] Subsequent Event [Member]	Jan. 31, 2013 Maximum [Member] Term Loan [Member] Subsequent Event [Member]	Dec. 31, 2012 Revolving Credit Facility [Member]	Dec. 31, 2011 Revolving Credit Facility [Member]	Jan. 31, 2013 Revolving Credit Facility [Member] Subsequent Event [Member]	Dec. 31, 2012 Revolving Credit Facility [Member] Minimum [Member]	Jan. 31, 2013 Revolving Credit Facility [Member] Minimum [Member] Subsequent Event [Member]	Dec. 31, 2012 Revolving Credit Facility [Member] Maximum [Member]	Jan. 31, 2013 Revolving Credit Facility [Member] Maximum [Member] Subsequent Event [Member]	Dec. 31, 2012 Standby Letters Of Credit [Member]	Jan. 31, 2013 Standby Letters Of Credit [Member] Subsequent Event [Member]
Loans Payable, Fair Value Disclosure													$ 227,300,000	$ 185,200,000
Levarage Ratio For Eurodollar Rate Based Borrowings										1.70%		2.45%				1.75%	1.75%	2.50%	2.50%
Levarage Ratio For Base Rate Based Borrowings										0.70%		1.45%				0.75%	0.75%	1.50%	1.50%
Line of Credit Facility, Interest Rate During Period			2.49%
Line of Credit Facility, Remaining Borrowing Capacity													134,900,000							2,800,000
Debt, Weighted Average Interest Rate			3.99%	4.07%
Line of Credit Facility, Current Borrowing Capacity															15,000,000
Line of Credit Facility, Increase, Additional Borrowings													125,000,000
Line of Credit Facility, Maximum Borrowing Capacity																					300,000,000
Line of Credit Facility, Borrowing Capacity, Description															(a) the lesser of (i) 60.0% of the "as-is" appraised value of our properties that form the borrowing base of the Amended Credit Facility and (ii) the amount that would create a debt service coverage ratio of not less than 1.5, and (b) 50% of the aggregate of the lesser of (i) the book value of each of our development assets (as such term is defined in the Second Amended and Restated Credit Agreement) and (ii) the "as-is" appraised value of each of our development assets, subject to certain limitations in the Second Amended and Restated Credit Agreement.
Amortization of deferred financing costs	1,600,000	800,000					2,838,000	1,338,000
Long Term Line Of Credit					50,000,000
Future Commitment Line Of Credit Facility Maximum Borrowing Capacity						600,000,000
Line Of Credit Facility Covenant Terms, Leverage Ratio, Maximum											1.00
Line Of Credit Facility Covenant Term, Fixed Charge Coverage Ratio, Minimum									1.00		1.50
Line Of Credit Facility Covenant Terms, Fixed Rate Debt and Debt, Subject To Hedge Agreements To Total Debt Minimum, Percentage					67.67%
Line Of Credit Facility Covenant Terms, Secured Recourse Debt Ratio, Maximum, Percentage					20.00%
Line Of Credit Facility Covenant Terms, Tangible Minimum					330,788,250
Line Of Credit Facility Covenant Terms, Percentage Of Net Proceeds Of Additional Equity Issuances					75.00%
Line Of Credit Facility Covenant Terms, Percentage Secured Debt Ratio Description					Not greater than 50% through February 17, 2013 and not greater than 45% on any date thereafter
Line Of Credit Facility Covenant Terms, Percentage Of Distributions Of Funds From Operations					95.00%
Letters of Credit Outstanding, Amount													$ 72,000,000