v3.22.2.2
Employees, Retirement and Incentive Plans - Performance Units (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Share-based Compensation Arrangement, Nonvested [Roll Forward]    
Payments for purchase of common units $ 334 $ 0
Performance Shares    
Share-based Compensation Arrangement, Nonvested [Roll Forward]    
Units outstanding at beginning of period (in shares) 76,719  
Vesting and transfer of full ownership to recipients (in shares) (24,809)  
Forfeited (in shares) (9,124)  
Units outstanding at end of period (in shares) 42,786  
Grant date fair value of units vested and transferred $ 600 $ 400
Value of performance units vested and expected to vest 700  
Unrecognized compensation related to nonvested units $ 400  
Weighted average recognition period 1 year 2 months 12 days  
Long-term Incentive Plan | Performance Shares    
Share-based Compensation Arrangements    
Performance period 3 years  
Range of performance units earned, minimum 0.00%  
Range of performance units earned, maximum 200.00%  
Share-based Compensation Arrangement, Nonvested [Roll Forward]    
Payments for purchase of common units $ 300