Non-recourse debt (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Long term debt non recourse finance lease	$ 313
Assets	$ 4,224	$ 4,453
Notes maturity date, description	The note matures in 2028
Non-Recourse Debt [Member] | Asset Pledged as Collateral [Member] | Notes Payable, Other Payables [Member] | Nonrecourse [Member]
Debt Instrument [Line Items]
Assets	$ 438,000
Maximum [Member]
Debt Instrument [Line Items]
Fixed interest rate on notes	4.66%