Noncontrolling Interest - Operating Partnership/Limited Partners' Equity - Preferred Units (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Temporary Equity [Line Items]    
Cumulative redeemable preferred units of the Operating Partnership outstanding $ 7,537 7,537
Series I 2 [Member]    
Temporary Equity [Line Items]    
Cumulative redeemable preferred units of the Operating Partnership outstanding $ 7,537  
Units 301,483 301,483
Liquidation Preference $ 25  
Dividend Rate 6.25%