Redeemable noncontrolling interest (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Apr. 26, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	$ 44,709,000	$ 36,135,000	$ 29,239,000
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	8,057,000	6,592,000
Temporary Equity, Interest in Subsidiary Earnings	(2,637,000)	(1,840,000)
Temporary Equity, Accretion to Redemption Value	3,154,000	2,144,000
2020	85,000
2021	85,000
Finite-Lived Intangible Assets, Accumulated Amortization	600,000	500,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	85,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	27,000
Goodwill	$ 680,000	$ 680,000		$ 700,000