Prepaids and Other Current Assets Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Prepaid Expense and Other Assets, Current [Abstract]
Other Prepaid Expense, Current	$ 14,763	$ 14,964
Deferred Costs and Other Assets	12,746	6,402
Prepaid insurance and property taxes	6,310	6,178
Prepaid other taxes	4,156	3,676
Deferred tax charge	4,241	3,542
Derivative Asset, Current	1,061	3,555
Deposit Assets	1,343	1,353
Other Assets, Current	2,227	1,822
Prepaid expenses and other current assets	46,847	41,492
Lessor, Operating Lease, Payments to be Received	25,941	28,948
Spare parts	28,538	22,725
Equity Method Investments	3,238	0
Debt Issuance Costs, Noncurrent, Net	2,827	0
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	2,673	2,915
Other Assets, Miscellaneous, Noncurrent	526	887
Other Assets	$ 63,743	$ 55,475