Income Taxes NOL and credit carryovers (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 10.0	$ 6.0
Federal NOL carryover valuation allowance	(4.0)
Federal NOL carryover	10.0
Operating Loss Carryforwards	12.0
State Credit Carryforwards
Operating Loss Carryforwards [Line Items]
Federal NOL carryover valuation allowance	0.0
Federal NOL carryover	2.0
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	1.0
Operating Loss Carryforwards	4.0
Argentina Capital Loss Carryforwards
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Valuation Allowance	0.0
Federal NOL carryover	3.0
Operating Loss Carryforwards	$ 8.0