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Stock Compensation for ROIC (Details Textual)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
Dec. 31, 2019
$ / shares
shares
Apr. 25, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense | $ $ 2.2 $ 2.2 $ 4.0 $ 3.9    
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted (in shares)     566,350      
Granted (in dollars per share) | $ / shares     $ 17.21      
Number of nonvested shares (in shares) 1,050,170   1,050,170   954,797  
Nonvested weighted average grant date fair value (in dollars per share) | $ / shares $ 16.39   $ 16.39   $ 16.55  
LTIP Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Nonvested weighted average grant date fair value (in dollars per share) | $ / shares $ 16.27   $ 16.27      
Equity Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized (in shares)           22,500,000
Fungible unit to full value award conversion ratio           6.25
Vesting on January 1, 2023 | Performance-based restricted stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted (in shares)     192,238      
Vesting on January 1, 2022 | LTIP Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of nonvested shares (in shares) 187,279   187,279