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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:    
Leases $ 14,809 $ 15,483
Asset retirement obligations 2,972 2,581
Net operating loss carry-forwards 28,398 5,878
Pension liabilities 978 2,148
Accruals and stock-based compensation 3,087 2,572
Other 5,767 6,300
Total gross deferred tax assets 56,011 34,962
Less valuation allowance (619) 0
Net deferred tax assets 55,392 34,962
Deferred tax liabilities:    
Property, plant and equipment 109,852 92,449
Leases 14,541 15,410
Intangible assets 12,867 10,710
Prepaid assets and other 2,732 2,407
Total gross deferred tax liabilities 139,992 120,976
Net deferred tax liabilities $ 84,600 $ 86,014