Annual report pursuant to Section 13 and 15(d)

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

v3.22.0.1
Share-based Awards and Cash-based Awards (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Amended and Restated Incentive Plan [Member]      
Cash Based Awards Granted In Period   0  
Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) 9,852,351    
Conversion ratio 1    
Granted, units (in shares) 710,441 0 994,698
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Granted in Period, Grant Date Fair Value $ 3.3 $ 0.0 $ 4.5
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Grant Date Fair Value $ 2.4 $ 2.0 $ 7.0
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 $ 1.4    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares) 44,569 63,831 1,260,520
Performance Share Units [Member]      
Granted, units (in shares) 393,073    
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Granted in Period, Grant Date Fair Value $ 1.9 $ 0.0 $ 0.0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares) 196,155    
Restricted Stock [Member]      
Granted, units (in shares) 62,502 109,376 46,360
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Granted in Period, Grant Date Fair Value $ 0.2 $ 0.3 $ 0.3
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Grant Date Fair Value $ 0.5 $ 0.2 $ 0.5
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 1 year 1 year 3 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 0.1    
Restricted Stock [Member] | Directors Compensation Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) 410,742    
First Short-term Cash-Based Incentive Compensation [Member]      
Cash Based Discretionary Incentive Compensation $ 7.0    
Second Short-term Cash-Based Incentive Compensation [Member]      
Cash Based Discretionary Incentive Compensation 6.5    
Long-term Cash-Based Incentive Compensation [Member]      
Fair value of awards 1.0    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 0.8