Annual report pursuant to Section 13 and 15(d)

Equity Transactions - Performance Based Restricted Units Narrative (Details)

v3.20.1
Equity Transactions - Performance Based Restricted Units Narrative (Details)
1 Months Ended 12 Months Ended
Jun. 25, 2018
d
Oct. 31, 2016
Dec. 31, 2019
$ / shares
shares
Dec. 31, 2018
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Consecutive trading days | d 45      
PSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Performance period (in years)   3 years    
Non-options granted (in shares) | shares     14,667 67,833
Granted (in dollars per share)     $ 12.25 $ 50.25
Risk-free interest rate (as a percent)     2.75% 2.15%
Nonvested shares outstanding | shares     64,886 85,590
PSUs, March 27, 2020        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage 50.00%      
PSUs, March 27, 2021        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage 25.00%      
PSUs, March 27, 2022        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage 25.00%      
Executive Chairman        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage     25.00%  
Executive Chairman | PSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting percentage 25.00%      
Consecutive trading days | d 45      
$100 Goal Stock Options | PSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Debt instrument, convertible, stock price trigger (in dollars per share)     $ 100.00  
$100 Goal Stock Options | Executive Chairman | PSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Debt instrument, convertible, stock price trigger (in dollars per share)     $ 100.00