Income Taxes NOL and credit carryovers (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 9.0	$ 10.0
Federal NOL carryover valuation allowance	(7.0)
Federal NOL carryover	9.0
Operating Loss Carryforwards
State Credit Carryforwards
Operating Loss Carryforwards [Line Items]
Federal NOL carryover valuation allowance	(2.0)
Federal NOL carryover	4.0
Canadian Capital Loss Carryforwards
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Valuation Allowance	(4.0)
Federal NOL carryover	4.0
Chile Capital Loss Carryforwards
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Valuation Allowance	(1.0)
Federal NOL carryover	1.0
Operating Loss Carryforwards	$ 2.0