Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Share-Based Compensation and Other Benefit Plans - Summary of Share-Based Compensation Expense (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2017
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Sep. 30, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based compensation   $ 2,246 $ 856      
Defined Contribution Plan, Cost   200 200      
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      
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   48,641        
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   608,938 223,882      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 13.69 $ 2.78      
Shares, Issued   102,586 22,321      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   209,486        
Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Employee [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   24,200       57,500
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        
Restricted Stock Units (RSUs) [Member] | Maximum [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   3 years        
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   24,200 87,899      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate         49.90%  
Share-based Compensation Arrangements By Share-based Payment Award, Award Amortization Period   3 years        
Shares, Issued   6,800        
Share-based Compensation Arrangements By Share-based Payment Award, Performance Period 3 years          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate       0.00% 0.00%  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized   201,491        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum       0.18% 1.66%  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum   0.22%   0.51%    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   150,512        
Performance Shares [Member] | Share-based Payment Arrangement, Employee [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 Authorized   24,200       57,500
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%    
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   126.20%   117.71%    
Share-based Compensation Arrangement by Share-based Payment Award, Shares, Expected to Vest, Percentage   200.00%        
Performance Shares [Member] | Year 1 [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         $ 34.02  
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    
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   $ 21.82   $ 16.02    
Change in Control            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Share-based compensation   $ 1,900        
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