Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION PLANS (Details)

v3.19.2
STOCK-BASED COMPENSATION PLANS (Details)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
$ / shares
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
installment
director
$ / shares
shares
Jun. 30, 2018
USD ($)
General and administrative expenses        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense | $ $ 0.6 $ 0.3 $ 0.9 $ 0.5
Restricted Stock | 2015 Equity Incentive Plan | Service vesting        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)     358,613  
Weighted average grant date fair value | $ / shares $ 2.35   $ 2.35  
Vesting period     3 years  
Restricted Stock | 2015 Equity Incentive Plan | Performance Vesting        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)     723,577  
Vesting period     3 years  
Restricted Stock | Outside of 2015 Plan | Service vesting        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)     21,500  
Weighted average grant date fair value | $ / shares 2.60   $ 2.60  
Number of directors | director     5  
Number of annual installments over which shares vest | installment     4  
Vesting period     3 years  
Restricted Stock | Outside of 2015 Plan | Performance Vesting        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)     21,500  
Weighted average grant date fair value | $ / shares $ 0.75   $ 0.75  
Performance objectives period     2 years  
Restricted Stock | Outside of 2015 Plan | Performance Vesting | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award payouts     50.00%  
Restricted Stock | Outside of 2015 Plan | Performance Vesting | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award payouts     200.00%  
Restricted Stock | Director | Outside of 2015 Plan | Service vesting        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)     149,639