SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION Reconciliation of Real Estate Properties (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at beginning of year	$ 1,287,198	$ 897,370	$ 753,989
Other improvements	112,622	65,480	37,497
Property Acquired	272,661	324,348	105,884
Consolidation of Previously Unconsolidated Investments	146,572	0	0
Balance at end of year	$ 1,819,053	$ 1,287,198	$ 897,370