Quarterly report pursuant to Section 13 or 15(d)

Equity-Based Compensation and Cash Awards - Stock Options (Details)

v3.21.1
Equity-Based Compensation and Cash Awards - Stock Options (Details) - Stock options - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Stock options    
Outstanding at the beginning of the period (in shares) 432,461  
Options expired (in shares) (5,000)  
Outstanding at the end of the period (in shares) 427,461 432,461
Vested (in shares) 427,461  
Exercisable (in shares) 427,461  
Weighted average exercise price    
Outstanding at the beginning of the period (in dollars per share) $ 50.64  
Options expired (in dollars per share) 50.00  
Outstanding at the end of the period (in dollars per share) 50.65 $ 50.64
Vested (in dollars per share) 50.65  
Exercisable (in dollars per share) $ 50.65  
Weighted average remaining contractual life    
Outstanding 3 years 9 months 18 days 4 years 1 month 6 days
Vested 3 years 9 months 18 days  
Exercisable 3 years 9 months 18 days  
Additional disclosures    
Unamortized equity based compensation expense $ 0