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Employee Benefit Plans - PSU Awards (Details) - PSUs
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Apr. 01, 2022
item
Jan. 31, 2023
USD ($)
$ / shares
shares
Jan. 31, 2022
USD ($)
$ / shares
shares
Jan. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Employee Benefit Plans              
Number of components of PSUs granted | item 2            
Awards granted based on the performance of our common stock against peer group companies (as a percent) 50.00%            
Awards granted based on cumulative total Free Cash Flow (as a percent) 50.00%            
Vesting Period 3 years            
Payout at vesting (as a percent)     157.00% 200.00%      
Units              
Awards outstanding at beginning of year (in shares)   1,888,024 1,381,469 1,297,126 1,381,469 1,297,126 1,565,044
Granted (in shares)         1,065,705 452,381 369,938
Vested (in shares)     (559,150) (368,038) (559,150) (368,038) (589,335)
Forfeited (in shares)             (48,521)
Awards outstanding at end of year (in shares)         1,888,024 1,381,469 1,297,126
Grant Date Fair Value              
Awards outstanding at beginning of year (in dollars per share) | $ / shares   $ 6.25 $ 8.34 $ 9.99 $ 8.34 $ 9.99 $ 10.17
Granted (in dollars per share) | $ / shares         4.25 5.33 13.15
Vested (in dollars per share) | $ / shares         7.60 10.44 12.64
Forfeited (in dollars per share) | $ / shares             7.60
Awards outstanding at end of year (in dollars per share) | $ / shares         $ 6.25 $ 8.34 $ 9.99
Compensation cost | $         $ 4.8 $ 4.1 $ 4.0
Future share-based compensation | $         $ 5.2    
Weighted average vesting period (in years)         1 year 4 months 24 days    
Shares issued upon vesting     876,469 736,075      
Fair value of awards vested | $     $ 3.2 $ 3.1      
Subsequent Event              
Employee Benefit Plans              
Payout at vesting (as a percent)   77.00%          
Units              
Vested (in shares)   (369,938)          
Grant Date Fair Value              
Shares issued upon vesting   285,778          
Fair value of awards vested | $   $ 3.6          
Minimum              
Employee Benefit Plans              
Payout at vesting (as a percent) 0.00%            
Maximum              
Employee Benefit Plans              
Payout at vesting (as a percent) 200.00%