Schedule II - Valuation and qualifying accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Allowance for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ (9,729)	$ (9,023)	$ (8,423)
Additions Charged to Costs and Expenses	(2,964)	(1,425)	(1,772)
Deduction	2,557	719	1,172
Balance at End of Year	(10,136)	(9,729)	(9,023)
Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	(14,143)	(13,740)	(13,527)
Additions Charged to Costs and Expenses	22	(403)	(213)
Balance at End of Year	$ (14,121)	$ (14,143)	$ (13,740)