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Equity - Incentive and Share-based Compensation (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 4 Months Ended 12 Months Ended
Oct. 08, 2013
Oct. 07, 2013
USD ($)
vesting_installment
shares
Jun. 30, 2015
USD ($)
shares
Feb. 28, 2015
USD ($)
vesting_installment
shares
Jan. 31, 2015
USD ($)
$ / shares
shares
Oct. 31, 2014
USD ($)
vesting_installment
shares
Jun. 30, 2014
USD ($)
shares
Apr. 30, 2014
USD ($)
shares
Jan. 31, 2014
USD ($)
vesting_installment
shares
Dec. 31, 2013
USD ($)
Apr. 30, 2014
USD ($)
shares
Dec. 31, 2015
USD ($)
$ / shares
shares
Dec. 31, 2014
USD ($)
$ / shares
shares
Dec. 31, 2013
USD ($)
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Fair value of share-based awards granted in period | $                       $ 100    
Period of service, upon completion of which, grantee's LTIP unit and restricted stock awards will immediately vest                       10 years    
Expected volatility rate look-back period 6 years                          
Share-based compensation arrangement by share-based payment award, equity instrument other than options, forfeitures rate                       0.05    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]                            
Unvested beginning balance, per share (USD per share) | $ / shares         $ 13.78             $ 13.78    
Vested, weighted average grant price, per share (USD per share) | $ / shares                       13.52    
Granted, weighted average grant price, per share (USD per share) | $ / shares                       18.11    
Forfeited, weighted average grant price, per share (USD per share) | $ / shares                       16.00    
Unvested ending balance, per share (USD per share) | $ / shares                       $ 15.20 $ 13.78  
Age of grantee at which LTIP unit and restricted stock awards immediately vest                       60 years    
Long-Term Incentive Plan Unit and Restricted Stock [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Fair value of share-based awards granted in period | $                       $ 6,600 $ 5,400 $ 11,700
Expected term                         3 years 3 years
Risk-free interest rate                         0.80% 0.66%
Expected price volatility                         26.00% 28.00%
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected dividend rate                       1.90% 2.60% 2.60%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]                            
Granted, weighted average grant price, per share (USD per share) | $ / shares                       $ 13.36 $ 10.65 $ 10.89
Long-Term Incentive Plan Unit and Restricted Stock [Member] | Maximum [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Expected term                       3 years    
Risk-free interest rate                       1.00%    
Expected price volatility                       29.00%    
Long-Term Incentive Plan Unit and Restricted Stock [Member] | Minimum [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Expected term                       2 years 10 months 24 days    
Risk-free interest rate                       0.80%    
Expected price volatility                       24.00%    
Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period       4 years                    
Fair value of share-based awards granted in period | $   $ 3,900   $ 800                    
Number of vesting installments (vesting_installment) | vesting_installment       3   3                
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)   193,059   33,398                    
Performance Based Long-Term Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period       3 years                    
Fair value of share-based awards granted in period | $   $ 600   $ 400                    
Number of vesting installments (vesting_installment) | vesting_installment       2                    
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)   64,352   33,398                    
Long-Term Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]                            
Fair value vested in period | $                       $ 3,500 $ 3,000  
Time Restricted Shares [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period           4 years                
Fair value of share-based awards granted in period | $           $ 20                
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)   119,146   14,315   1,571                
Performance Restricted Shares [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period           2 years                
Fair value of share-based awards granted in period | $           $ 10                
Period of service, upon completion of which, grantee's LTIP unit and restricted stock awards will immediately vest           3 years                
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)   39,706   14,315   1,571                
Restricted Stock [Member]                            
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Unvested beginning balance (in shares)         102,296             102,296    
Vested (in shares)                       (25,223)    
Granted (in shares)                       30,020    
Forfeited (in shares)                       (9,501)    
Unvested ending balance (in shares)                       97,592 102,296  
Long-Term Incentive Plan Unit [Member]                            
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Unvested beginning balance (in shares)         1,194,660             1,194,660    
Vested (in shares)                       (234,401)    
Granted (in shares)                       461,180    
Forfeited (in shares)                       (5,544)    
Unvested ending balance (in shares)                       1,415,895 1,194,660  
Awards that Meet Age and Service Requirements for Vesting [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]                            
Noncash share-based compensation expense recognized | $                   $ 2,300   $ 500 $ 200  
Unrecognized compensation expense | $                       $ 100    
Unrecognized compensation expense, period for recognition (in years)                       1 year 2 months 12 days    
Awards that Do Not Meet Age and Service Requirements for Vesting [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]                            
Noncash share-based compensation expense recognized | $                   $ 700   $ 5,000 $ 3,500  
Unrecognized compensation expense | $                       $ 10,300    
Unrecognized compensation expense, period for recognition (in years)                       2 years 3 months 18 days    
Director [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Share-based compensation arrangement by share-based payment award, equity instrument other than options, forfeitures rate                       0    
Director [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period             3 years              
Fair value of share-based awards granted in period | $   $ 900         $ 500              
Number of vesting installments (vesting_installment) | vesting_installment   3                        
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)   69,228         32,196              
Director [Member] | 2013 Plan Units Vesting February 2018 [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period     3 years                      
Fair value of share-based awards granted in period | $     $ 600                      
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)     35,082                      
Executive Officer [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Share-based compensation arrangement by share-based payment award, equity instrument other than options, forfeitures rate                       0    
Executive Officer [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period   3 years             4 years          
Fair value of share-based awards granted in period | $   $ 5,400             $ 2,500          
Number of vesting installments (vesting_installment) | vesting_installment   4             3          
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)   440,192             180,260          
Executive Officer [Member] | Performance Based Long-Term Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period   3 years             3 years          
Fair value of share-based awards granted in period | $   $ 900             $ 900          
Number of vesting installments (vesting_installment) | vesting_installment   2             2          
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)   146,730             180,263          
Executive Officer [Member] | 2013 Plan Units Vesting February 2018 [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period       4 years                    
Fair value of share-based awards granted in period | $       $ 200                    
Number of vesting installments (vesting_installment) | vesting_installment       3                    
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)       13,736                    
Executive Officer [Member] | 2013 Plan Units Vesting February 2018 [Member] | Performance Based Long-Term Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period       3 years                    
Fair value of share-based awards granted in period | $       $ 100                    
Number of vesting installments (vesting_installment) | vesting_installment       2                    
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)       13,736                    
Executive Officer [Member] | 2013 Plan Units Vesting January 2018 [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period       4 years                    
Fair value of share-based awards granted in period | $       $ 2,900                    
Number of vesting installments (vesting_installment) | vesting_installment       3                    
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)       168,033                    
Executive Officer [Member] | 2013 Plan Units Vesting January 2018 [Member] | Performance Based Long-Term Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period       3 years                    
Fair value of share-based awards granted in period | $       $ 1,300                    
Number of vesting installments (vesting_installment) | vesting_installment       2                    
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)       154,266                    
Employee [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Fair value of share-based awards granted in period | $         $ 200           $ 400      
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)         9,531           23,487      
Employee [Member] | Performance Based Long-Term Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Fair value of share-based awards granted in period | $                     $ 200      
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)                     23,484      
Employee [Member] | Time Restricted Shares [Member]                            
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)                     7,061      
Employee [Member] | Performance Restricted Shares [Member]                            
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)                     7,059      
2013 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Number of shares authorized under the plan (shares)                       12,200,000    
Number of shares that remain available for future issuance (shares)                       10,200,000    
2013 Plan [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Fair value of share-based awards granted in period | $               $ 700            
Restricted Stock and LTIP Unit Activity [Roll Forward]                            
Granted (in shares)               48,923            
2013 Plan [Member] | Share-based Compensation Award, Tranche One [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period               3 years            
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage               30.00%            
2013 Plan [Member] | Share-based Compensation Award, Tranche Two [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period               4 years            
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage               30.00%            
2013 Plan [Member] | Share-based Compensation Award, Tranche Three [Member] | Time Based Long-Tern Incentive Plan Unit [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting period               5 years            
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage               40.00%