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Share-Based Compensation - Stock Option Plans (Details)
$ / shares in Units, $ in Thousands
12 Months Ended 36 Months Ended
Apr. 22, 2020
Apr. 20, 2020
Dec. 31, 2021
USD ($)
item
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Share-based compensation disclosures            
Share-based compensation expense | $     $ 19,200 $ 24,600 $ 24,700  
Reverse stock split ratio 50 0.02        
Liability related to awards | $     51,993 $ 82,462   $ 51,993
Options            
Options awarded (in shares)       0    
Restricted Stock [Member]            
Share-based compensation disclosures            
Share-based compensation expense | $     $ 19,100 $ 23,600 $ 24,500  
Number of types of performance share awards | item     2      
Option to purchase common stock available for grant     400,000     400,000
Granted (in shares)     83,000      
Shares awarded during period     83,000      
Restricted Stock [Member] | Employees and Director [Member]            
Share-based compensation disclosures            
Granted (in shares)     82,722 4,156 65,299  
Shares awarded during period     82,722 4,156 65,299  
Aggregate value of restricted stock awards at date of grant | $     $ 8,700 $ 100 $ 10,600 $ 8,700
Fair value of awards vested | $     $ 2,500 $ 2,600 $ 4,100  
Restricted Stock [Member] | Maximum            
Share-based compensation disclosures            
Vesting period of shares     4 years      
Restricted Stock [Member] | Maximum | Employees and Director [Member]            
Share-based compensation disclosures            
Vesting period of shares     4 years 4 years 4 years  
Restricted Stock Based on Performance Conditions [Member]            
Share-based compensation disclosures            
Granting period       1 year    
Restricted Stock Based on Performance Conditions [Member] | Executive Officers            
Share-based compensation disclosures            
Vesting period of shares       3 years 3 years  
Total fair value of option vested during the period | $       $ 3,000 $ 2,500  
Granted (in shares)       59,490 48,253  
Shares awarded during period       59,490 48,253  
Liability related to awards | $       $ 2,400    
Fair value of awards vested | $       $ 8,800 $ 7,500  
Restricted Stock Based on Performance Conditions [Member] | Maximum            
Share-based compensation disclosures            
Vesting percentage     200.00%      
Restricted Stock Based on Performance Conditions [Member] | Minimum            
Share-based compensation disclosures            
Vesting percentage     30.00%      
Restricted Stock Based on Market Conditions [Member]            
Share-based compensation disclosures            
Vesting period of shares           3 years
Granted (in shares)     61,997 22,931 52,191  
Shares awarded during period     61,997 22,931 52,191  
Aggregate value of restricted stock awards at date of grant | $     $ 2,200 $ 2,500 $ 3,700 $ 2,200
Assumptions used to value grant date fair value            
Risk free interest rate (as a percent)     0.18% 1.57% 2.48%  
Expected volatility (as a percent)     108.00% 74.00% 70.00%  
Share price | $ / shares     $ 60.62 $ 148.00 $ 109.50 $ 60.62
Expected term (in years)     3 years 3 years 3 years  
Key Officer Director and Managerial Employee Stock Options [Member]            
Share-based compensation disclosures            
Option to purchase common stock available for grant     400,000 400,000   400,000
Exercise period     10 years      
Total fair value of option vested during the period | $     $ 100   $ 200  
Options            
Options outstanding at the beginning of the period (in shares)     31,000      
Granted (in shares)     1,000      
Exercised (in shares)     0 0 0  
Surrendered (in shares)     (16,000)      
Options outstanding at the end of the period (in shares)     16,000 31,000   16,000
Options exercisable at the end of the period (in shares)     16,000     16,000
Weighted Average Exercise Price            
Options outstanding at the beginning of the period (in dollars per share) | $ / shares     $ 628.10      
Granted (in dollars per share) | $ / shares     104.06      
Surrendered (in dollars per share) | $ / shares     817.89     $ 817.89
Options outstanding at the end of the period (in dollars per share) | $ / shares     419.22 $ 628.10   419.22
Options exercisable at the end of the period (in dollars per share) | $ / shares     $ 419.22     $ 419.22
Weighted Average Remaining Contractual Term            
Options outstanding at the end of the period     5 years 5 months 1 day      
Options exercisable at the end of the period     5 years 5 months 1 day      
Assumptions used to value grant date fair value            
Granted (in dollars per share) | $ / shares     $ 72.69   $ 53.50  
Risk free interest rate (as a percent)     0.72%   1.79%  
Dividend yield (as a percent)     0.00%   1.65%  
Expected volatility (as a percent)     102.50%   57.59%  
Expected term (in years)     4 years   4 years  
Key Officer Director and Managerial Employee Stock Options [Member] | Employees Executives And Directors            
Share-based compensation disclosures            
Vesting period of shares         4 years  
Options            
Granted (in shares)     963   2,759