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Employees, Retirement and Incentive Plans - Phantom Units (Details) - Phantom Share Units (PSUs) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Units outstanding at beginning of period (in shares) 203,263    
Granted (in shares) 84,705    
Vesting and transfer of full ownership to recipients (in shares) (105,031)    
Forfeited (in shares) (67,128)    
Units outstanding at end of period (in shares) 115,809 203,263  
Weighted- Average Grant-Date Fair Value      
Units outstanding at beginning of period (in USD per share) $ 14.85    
Granted (in USD per share) 18.57    
Vesting and transfer of full ownership to recipients (in USD per share) 16.88 $ 18.93 $ 11.92
Forfeited (in USD per share) 13.26    
Units outstanding at end of period (in USD per share) $ 16.66 $ 14.85  
Grant date fair value of units vested and transferred $ 1.8 $ 2.1 $ 2.0
Unrecognized compensation related to nonvested units $ 1.3    
Weighted average recognition period 1 year 3 months 18 days    
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 1 year    
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years