Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Predecessor - Defined Benefit Healthcare (Details)

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Benefit Plans - Predecessor - Defined Benefit Healthcare (Details) - Aria Energy LLC - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost $ 9 $ 19
Interest cost 25 45
Amortization of prior service cost 3 6
Recognition of net actuarial loss 16 40
Net periodic benefit cost $ 53 $ 110