Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax liabilities:
Property and equipment	$ 63,802	$ 58,676
Investments in 50% or Less Owned Companies		2,925
Other	3,459	4,819
Total deferred tax liabilities	67,261	66,420
Deferred tax assets:
Federal Net Operating Loss Carryforwards	20,312	23,061
Other	8,803	10,073
Total deferred tax assets	29,115	33,134
Valuation Allowance	(2,536)	(2,536)
Total deferred tax assets	26,579	30,598
Net deferred tax liabilities	$ 40,682	$ 35,822