Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation and Other Benefit Plans - Summary of Share-Based Compensation Expense (Details)

v3.21.2
Share-Based Compensation and Other Benefit Plans - Summary of Share-Based Compensation Expense (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based compensation     $ 800   $ 4,179 $ 2,582
Defined Contribution Plan, Cost $ 200   100   $ 500 500
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 22,500,000       22,500,000  
Other Pension, Postretirement and Supplemental Plans [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Pension and Other Postretirement Benefits Cost (Reversal of Cost) $ 100   $ 100   $ 100 $ 100
Time Vested Restricted Stock Units - Employees [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 118,223   281,382   118,223 281,382
Restricted Stock Units (RSUs) [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 760,220       760,220  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value         $ 13.84 $ 4.49
Shares, Issued 122,911   45,435   122,911 45,435
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 239,524       239,524  
Restricted Stock Units (RSUs) [Member] | Minimum [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangements By Share-based Payment Award, Award Amortization Period         1 year  
Performance Shares [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 225,206   145,399   225,206 145,399
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate       49.90% 134.74%  
Shares, Issued 7,252   19,402   7,252 19,402
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate   0.00%   0.00% 0.00%  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 484,197       484,197  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum   0.18%   1.66% 0.22%  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum   0.51%     0.29%  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 345,069       345,069  
Performance Shares [Member] | Minimum [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate   101.32%     131.74%  
Share-based Compensation Arrangement by Share-based Payment Award, Shares, Expected to Vest, Percentage         0.00%  
Performance Shares [Member] | Maximum [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate   117.71%        
Share-based Compensation Arrangements By Share-based Payment Award, Award Amortization Period         3 years  
Share-based Compensation Arrangement by Share-based Payment Award, Shares, Expected to Vest, Percentage         200.00%  
Performance Shares [Member] | Year 1 [Member] | Minimum [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 2.40     $ 17.74  
Performance Shares [Member] | Year 1 [Member] | Maximum [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 16.02     33.31  
Change in Control            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based compensation $ 1,900          
Restricted Stock Units and Performance Stock Units            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount     200,000     100,000
ROCE            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value         $ 13.63  
Employees and Directors [Member]            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 4,424,600       4,424,600