Income Taxes NOL and credit carryovers (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 6.0	$ 7.0
Federal NOL carryover valuation allowance	(4.0)
Federal NOL carryover	7.0
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Domestic Subsidiaries	30.0
Operating Loss Carryforwards	8.0
State Credit Carryforwards
Operating Loss Carryforwards [Line Items]
Federal NOL carryover valuation allowance	0.0
Federal NOL carryover	1.0
Operating Loss Carryforwards	0.0
Canadian Capital Loss Carryforwards
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Valuation Allowance	(4.0)
Federal NOL carryover	4.0
Operating Loss Carryforwards	0.0
Chile Capital Loss Carryforwards
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Valuation Allowance	0.0
Federal NOL carryover	2.0
Operating Loss Carryforwards	$ 8.0