Income Taxes - Reconciliation of effective federal income tax rate (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Taxes
Federal statutory rate	21.00%	21.00%
Stock-based awards		(0.50%)
State income taxes	1.00%	3.10%
Foreign income taxes	(0.60%)
Permanent differences	(0.70%)
Changes in Valuation allowance	5.40%	(24.60%)
Other	(0.90%)	0.30%
Effective income tax rate	25.20%	(0.70%)