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Equity - Share-based Awards Expensed & Capitalized Amounts (Details) - 2013 Incentive Award Plan - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation expense related to non-vested shares $ 10,400  
Expensed share-based compensation 1,346 $ 934
Capitalized share-based compensation 50 32
Total share-based compensation 1,396 $ 966
Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Capitalized $ 600  
Weighted average remaining vesting period 30 months