Income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current
Federal	$ 443	$ 1,248
State	222	160	$ 16
Total current	665	1,408	16
Total tax provision	$ 665	$ 1,408	$ 16