Quarterly report pursuant to Section 13 or 15(d)

Share-based Awards and Cash-based Awards (Details Textual)

v3.21.2
Share-based Awards and Cash-based Awards (Details Textual) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2020
Sep. 30, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)   10,347,591  
Conversion ratio   1  
Directors Compensation Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)   410,742  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) 500,000    
Amended and Restated Incentive Plan [Member]      
Cash-Based Awards, Granted in Period (in shares)     0
Restricted Stock Units (RSUs) [Member]      
Granted, units (in shares)   704,949 0
Vesting percentage each year on January 1, 2022, 2023, and 2024   0.33%  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 2.7  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)   43,132  
Performance Share Units [Member]      
Granted, units (in shares)   391,189  
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Granted in Period, Grant Date Fair Value   $ 2.2  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 1.6  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)   4,890  
Restricted Stock [Member]      
Conversion ratio   1  
Granted, units (in shares)   62,502  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 0.1  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)   0  
First Short Term Cash Based Award [Member]      
Cash Based Discretionary Incentive Compensation   $ 7.6  
Second Short Term Cash Based Award [Member]      
Cash Based Discretionary Incentive Compensation   3.9  
Long Term Cash Based Awards [Member]      
Fair value of awards   0.7  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 0.6