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Share-Based Compensation Plan (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Feb. 10, 2016
Jul. 27, 2015
Feb. 11, 2015
Feb. 04, 2014
Dec. 13, 2013
Jan. 30, 2013
Feb. 08, 2012
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based award vesting period               6 years    
Number of common shares available for issuance under the 2009 Equity Incentive Plan               151,552    
Operating Partnership outstanding               236,351   236,351
LTIP units, vested               54,845    
Restricted Stock [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Allocated Share-based Compensation Expense               $ 0.4 $ 0.4  
Total unrecognized compensation cost               $ 3.8    
Weighted average remaining vesting period (in years)               2 years 6 months    
Share-based equity award grant               67,280    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period               52,452    
Restricted Stock [Member] | Minimum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based award vesting period               3 years    
Restricted Stock [Member] | Maximum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based award vesting period               5 years    
Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Allocated Share-based Compensation Expense               $ 1.2 1.5  
Total unrecognized compensation cost               $ 13.7    
Weighted average remaining vesting period (in years)               2 years 2 months    
LongTermIncentivePartnershipUnitsClassA [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Value of LTIP grants per share               $ 8.50    
LongtermincentivepartnershipunitsclassB [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Value of LTIP grants per share         $ 29.19          
LTIP Units Granted         226,882          
Grant date fair value of performance-based equity awards         $ 6.6          
Long Term Incentive Partnership Units [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Allocated Share-based Compensation Expense               $ 0.3 $ 0.3  
Total unrecognized compensation cost               $ 4.1    
Weighted average remaining vesting period (in years)               1 year 11 months    
February 2012 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based equity award grant             72,056      
January 2013 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based equity award grant           72,118        
December 2013 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based equity award grant         252,088          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period               25,134    
December 2013 [Member] | Performance Shares [Member] | Minimum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Estimated Shares Expected to Vest Minimum and Maximum         0.00%          
December 2013 [Member] | Performance Shares [Member] | Maximum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Estimated Shares Expected to Vest Minimum and Maximum         200.00%          
December 2013 - Tranche 1 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based equity award grant               50,418    
Estimated Shares Expected to Vest Minimum and Maximum               49.00%    
February 2014 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based equity award grant       66,483            
Shares Expected to Vest Not Subject to Maximum       12,261            
February 2014 [Member] | Performance Shares [Member] | Minimum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Estimated Shares Expected to Vest Minimum and Maximum       0.00%            
February 2014 [Member] | Performance Shares [Member] | Maximum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Estimated Shares Expected to Vest Minimum and Maximum       200.00%            
February 2015 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based equity award grant     44,962              
Shares Expected to Vest Not Subject to Maximum     8,559              
February 2015 [Member] | Performance Shares [Member] | Minimum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Estimated Shares Expected to Vest Minimum and Maximum     0.00%              
February 2015 [Member] | Performance Shares [Member] | Maximum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Estimated Shares Expected to Vest Minimum and Maximum     200.00%              
July 2015 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based equity award grant   771                
February 2016 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based equity award grant 100,919                  
Shares Expected to Vest Not Subject to Maximum 17,372                  
February 2016 [Member] | Performance Shares [Member] | Minimum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Estimated Shares Expected to Vest Minimum and Maximum 0.00%                  
February 2016 [Member] | Performance Shares [Member] | Maximum [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Estimated Shares Expected to Vest Minimum and Maximum 200.00%                  
Officer Awards [Member] | February 2012 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period               120,016    
Officer Awards [Member] | January 2013 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period               120,730    
Nonexecutive management award [Member] | February 2012 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period               87,556    
Nonexecutive management award [Member] | January 2013 [Member] | Performance Shares [Member]                    
Share-Based Compensation Plan (Textual) [Abstract]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period               56,562