Annual report pursuant to Section 13 and 15(d)

Benefit Plans - Predecessor - Changes in Benefit Obligations (Details)

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Benefit Plans - Predecessor - Changes in Benefit Obligations (Details) - USD ($)
$ in Thousands
8 Months Ended 12 Months Ended
Sep. 14, 2021
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Service cost   $ 11 $ 0
Interest cost   27 0
Aria Energy LLC      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Service cost $ 27   49
Interest cost 64   103
Net actuarial (loss) gain (213)   45
Postemployment Retirement Benefits      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Beginning balance benefit obligation 0 0 0
Service cost   11 0
Interest cost   27 0
Net actuarial (loss) gain   (917) 0
Net benefits paid   (71) 0
Ending balance benefit obligation   2,617 0
Postemployment Retirement Benefits | Aria Energy LLC      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Beginning balance benefit obligation 3,750 $ 3,750 3,599
Service cost 27   49
Interest cost 64   103
Net actuarial (loss) gain (148)   144
Net benefits paid (72)   (145)
Ending balance benefit obligation $ 3,621   $ 3,750