Accounting policies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Cash and cash equivalents	$ 5,100		$ 7,400
Deposits held in foreign bank	7,300
Foreign Currency Transaction Gain (Loss), before Tax [Abstract]
Foreign Currency Transaction Gain (Loss), before Tax	$ 25,779	$ 22,046
Bahamas [Member]
Deposits held in foreign bank			$ 5,700