Equity Incentive Plan - Valuation assumption (Details) - Performance units and shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	2 years 10 months 24 days	2 years 10 months 24 days	2 years 10 months 24 days
Volatility	20.00%	23.60%	33.50%
Risk-free rate	4.50%	4.40%	1.80%