Accounting policies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Cash and cash equivalents	$ 5,200		$ 5,100
Deposits held in foreign bank	6,900
Foreign Currency Transaction Gain (Loss), before Tax [Abstract]
Foreign Currency Transaction Gain (Loss), before Tax	$ 24,197	$ 25,779
Bahamas [Member]
Deposits held in foreign bank			$ 3,000