Annual report pursuant to Section 13 and 15(d)

Equity Transactions - Phantom Stock Options (Details)

v3.20.1
Equity Transactions - Phantom Stock Options (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Jun. 25, 2018
d
Dec. 31, 2019
USD ($)
d
$ / shares
shares
Dec. 31, 2018
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Consecutive trading days 45    
Cash-settled phantom stock options | $   $ 0.8  
Phantom stock options | $   $ 0.5  
Phantom stock Options (Level 3)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Non-options granted (in shares) | shares   53,768 270,630
Granted (in dollars per share) | $ / shares   $ 9.25 $ 26.75
Canceled (in shares) | shares     18,472
Nonvested shares outstanding | shares   228,081 238,965
$100 Goal Stock Options | Phantom stock Options (Level 3)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Estimated term (in years)   P5Y  
Consecutive trading days   45  
$100 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2020      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   50.00%  
$100 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2021      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   25.00%  
$100 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2022      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   25.00%  
$8 Goal Stock Options | Phantom stock Options (Level 3)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Estimated term (in years)   P7Y  
Consecutive trading days   45  
$8 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2020      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   50.00%  
$8 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2021      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   50.00%  
Executive Chairman      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   25.00%  
Executive Chairman | $100 Goal Stock Options | Phantom stock Options (Level 3)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Debt instrument, convertible, stock price trigger (in dollars per share) | $ / shares   $ 100.00  
Consecutive trading days   45  
Executive Chairman | $100 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, June 25, 2018      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   50.00%  
Executive Chairman | $100 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2019      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   25.00%  
Executive Chairman | $100 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2020      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   25.00%  
Executive Chairman | $8 Goal Stock Options | Phantom stock Options (Level 3)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Debt instrument, convertible, stock price trigger (in dollars per share) | $ / shares   $ 200.00  
Consecutive trading days   45  
Executive Chairman | $8 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, June 25, 2018      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   50.00%  
Executive Chairman | $8 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2019      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   25.00%  
Executive Chairman | $8 Goal Stock Options | Phantom stock Options (Level 3) | Phantom Stock Options, March 27, 2020      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage   25.00%