Organization and significant accounting policies - Schedule of Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01	Dec. 31, 2024
Rental revenue
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Service revenue
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year