Contingencies (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($)	Dec. 31, 2021 USD ($) name	Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Site Contingency, Names of Other Potentially Responsible Parties | name		100
Litigation Settlement, Expense		$ 115,000
Loss Contingency, Range of Possible Loss, Maximum		1,700,000
Loss Contingency, Range of Possible Loss, Portion Not Accrued		500,000
Payments for Environmental Liabilities		6,000
lower range of costs		1,900,000
upper range of costs		3,500,000
Litigation Settlement, Amount Awarded to Other Party	$ 6,750
Amount Authorized to Levy			$ 100
Estimated Litigation Liability		750
EPA Investigation of Portland Harbor [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		1,200,000
Putative Shareholder Derivative Lawsuit [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		$ 10,000