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Shareholders' Equity - Additional Information (Details)
1 Months Ended 12 Months Ended 68 Months Ended
Jun. 01, 2015
Jun. 04, 2014
officer
shares
Sep. 30, 2013
officer
shares
Jan. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
vote
$ / shares
shares
Dec. 31, 2014
$ / shares
shares
Dec. 31, 2015
USD ($)
vote
$ / shares
shares
Stockholders Equity Note Disclosure [Line Items]              
Common shares, shares authorized (in shares)         500,000,000 500,000,000 500,000,000
Common shares, par value (in dollars per share) | $ / shares         $ 0.01 $ 0.01 $ 0.01
Number of votes per common share | vote         1   1
Common shares, shares outstanding (in shares)         38,308,937 34,173,691 38,308,937
Additional common shares issued (in shares)             36,956,000
Preferred shares, shares authorized (in shares)         100,000,000 100,000,000 100,000,000
Preferred shares, par value (in dollars per share) | $ / shares         $ 0.01 $ 0.01 $ 0.01
Operating Partnership common units held by unaffiliated third parties (in shares)         0 0 0
Long Term Incentive Plan Units              
Stockholders Equity Note Disclosure [Line Items]              
Operating partnership unit (in shares)         257,775 257,775 257,775
Number of recipients | officer   2 1        
Percent of units with full parity that have vested         100.00%   100.00%
LTIP units achieving full parity (in shares)   231,525 26,250        
Class A Performance LTIP Units              
Stockholders Equity Note Disclosure [Line Items]              
Operating partnership unit (in shares)         183,300 0 183,300
Distribution Entitlement, Percentage 10.00%            
Equity Incentive Plans              
Stockholders Equity Note Disclosure [Line Items]              
Common shares withheld to meet the minimum statutory tax withholding requirements (in shares)         763 867  
Common shares price per share, withheld to meet the minimum statutory tax withholding requirements (in dollars per share) | $ / shares         $ 29.35 $ 20.63  
DRSP Plan              
Stockholders Equity Note Disclosure [Line Items]              
Stock Purchase Plan, Authorized Amount | $       $ 25,000,000      
Additional common shares issued (in shares)         5,595 2,083,000  
Stock Purchase Plan, Average Price Per Share (in dollars per share) | $ / shares         $ 25.00 $ 24.38  
Stock Purchase Plan, Remaining Authorized Repurchase Amount | $         $ 24,900,000   $ 24,900,000
ATM Plan              
Stockholders Equity Note Disclosure [Line Items]              
Stock Purchase Plan, Authorized Amount | $       $ 50,000,000      
Additional common shares issued (in shares)         880,820 880,820  
Stock Purchase Plan, Average Price Per Share (in dollars per share) | $ / shares         $ 23.54 $ 23.54  
Stock Purchase Plan, Remaining Authorized Repurchase Amount | $         $ 29,300,000   $ 29,300,000