Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details)

v3.20.4
Stock-Based Compensation (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 05, 2021
Mar. 05, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation     $ 5,319 $ 3,336 $ 2,671
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized     $ 7,100    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     2 years    
Performance Goals For Awards     135%    
Additional Earn Up Rate For Grantee     150.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     135.00%    
2017 Program [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%        
Long Term Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     3 years    
2017 Performance Program [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00%        
Long-Term Awards [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate     0.00%    
Long-Term Awards [Member] | Long Term Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate     200.00%    
Long Term Incentives Plan Units [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures     28    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00% 50.00%      
Long Term Incentives Plan Units [Member] | 2016 Equity Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant     521